Butterfly Weed Asclepias tuberosa Linnaeus subsp. tuberosa    Synonyms: Butterfly Milkweed, Butterflyweed.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Gentianales   >   Family Apocynaceae   >   Genus Asclepias   

Status:

Butterfly Weed is an unmistakable, locally common milkweed that can be found growing across most of Maryland, and grows throughout the eastern and southern United States. Butterfly Weed prefers open dry field habitats but can also be found growing along wooded edges. Bloom times for Butterfly Weed in the Maryland Biodiversity Project database range from 6/10 through 9/13.

Description:

Butterfly Weed is easily identified by the bright coloration of the flowers. Most plants are a deep orange but bright yellow flowers can also be encountered. Butterfly Weed has clear sap, in contrast to the milky sap that is typically found in other milkweed species.

Relationships:

Monarch and other caterpillars, including Queens and Grey Hairstreaks often feed on the leaves of Butterfly Weed.

This summer-long bloomer is a favored plant for many native pollinators, including numerous species of bees, wasps, and butterflies, as well as hummingbirds.

There are 438 records in the project database.

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Butterfly Weed in Dorchester Co., Maryland (7/8/2016). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/29/2017). (c) Bill Hubick, all rights reserved. Photo by Bill Hubick. (MBP list)

Butterfly Weed in flower in Caroline Co., Maryland (6/30/2016). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Worcester Co., Maryland (8/10/2014). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2016). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed blooming in Washington Co., Maryland (6/19/2014). Photo by Kimberly Booth. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Worcester Co., Maryland (7/26/2013). Photo by Jim Stasz. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed blooming in Anne Arundel Co., Maryland (6/30/2015). Photo by David Illig. (MBP list)

Butterfly Weed in seed in Allegany Co., Maryland (8/26/2017). Photo by Kimberly Booth. (MBP list)

Butterfly Weed with seed pod in Washington Co., Maryland (9/15/2013). Photo by Jim Stasz. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/20/2017). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed blooming in Baltimore City, Maryland (6/20/2015). Photo by Bill Hubick. (MBP list)

Butterfly Weed in Howard Co., Maryland (7/19/2017). Collected and processed by Helen Lowe Metzman. Photo by USGS PWRC. (MBP list)

Butterfly Weed in bloom in Howard Co., Maryland (6/20/2017). Collected and processed by Helen Lowe Metzman. Photo by USGS PWRC. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/25/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed flowering in Caroline Co., Maryland (6/30/2016). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/30/2016). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed blooming in Wicomico Co., Maryland (6/17/2012). Photo by Bill Hubick. (MBP list)

Butterfly Weed in Howard Co., Maryland (7/11/2014). Photo by Jim Wilkinson. (MBP list)

Butterfly Weed blooming in Allegany Co., Maryland. Photo by Kimberly Booth. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/22/2017). Photo by Bill Harms. (MBP list)

Butterfly Weed blooming in Washington Co., Maryland (6/18/2016). Photo by Bill Hubick. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/4/2013). Photo by Jared Satchell. (MBP list)

Butterfly Weed blooming in Prince George's Co., Maryland (6/3/2017). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/24/2016). Photo by Kimberly Booth. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/11/2014). Photo by Jim Stasz. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/28/2016). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/31/2016). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Howard Co., Maryland (6/25/2010). Photo by Bill Harms. (MBP list)

Butterfly Weed blooming in Worcester Co., Maryland (7/26/2014). Photo by Scott Housten. (MBP list)

Butterfly Weed blooming in Anne Arundel Co., Maryland (6/23/2013). Photo by Benjamin DeHaven. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/26/2016). Photo by Bill Hill. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/16/2018). Photo by Bill Hubick. (MBP list)

Butterfly Weed growing in Anne Arundel Co., Maryland (6/10/2011). Photo by Bill Harms. (MBP list)

Leaves of Butterfly Weed growing in Anne Arundel Co., Maryland (6/10/2011). Photo by Bill Harms. (MBP list)

Butterfly Weed at Swan Creek, Anne Arundel Co., Maryland (8/12/2013). Photo by Tim Carney. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/16/2012). Photo by Kimberly Booth. (MBP list)

Butterfly Weed in Worcester Co., Maryland (7/5/2015). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (7/5/2015). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/7/2016). Photo by Bonnie Bell. (MBP list)

Butterfly Weed blooming in Anne Arundel Co., Maryland (7/13/2014). Photo by Matthew Beziat. (MBP list)

Butterfly Weed blooming in Calvert Co., Maryland (6/15/2017). Photo by Tyler Bell. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/24/2017). Photo by Bill Hubick. (MBP list)

Butterfly Weed blooming in Calvert Co., Maryland (6/30/2017). Photo by Tyler Bell. (MBP list)

Butterfly Weed in Frederick Co., Maryland (7/12/2016). Photo by Jim Wilkinson. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/18/2017). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/20/2017). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in bloom in Allegany Co., Maryland (8/30/2017). Photo by Kimberly Booth. (MBP list)

Butterfly Weed in Howard Co., Maryland (7/3/2015). Photo by Jim Wilkinson. (MBP list)

Butterfly Weed blooming in Allegany Co., Maryland (7/19/2017). Photo by Mark Eanes. (MBP list)

Butterfly Weed in Worcester Co., Maryland (7/26/2014). Photo by Scott Housten. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/15/2018). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed blooming in Dorchester Co., Maryland (7/9/2018). Photo by Mark Etheridge. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/30/2018). Photo by Sue Muller. (MBP list)

Butterfly Weed blooming in Worcester Co., Maryland (8/5/2018). Photo by Josh Emm. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (12/15/2018). Photo by Matt Grey. (MBP list)

Butterfly Weed blooming in Garrett Co., Maryland (7/14/2018). Photo by Robert Ferraro. (MBP list)

Butterfly Weed blooming in Anne Arundel Co., Maryland (6/28/2017). Photo by Matt Grey. (MBP list)

Butterfly Weed blooming in St. Mary's Co., Maryland (6/1/2019). Photo by Tyler Bell. (MBP list)

Butterfly Weed in Talbot Co., Maryland (6/16/2019). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/1/2019). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Carroll Co., Maryland (7/4/2019). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed blooming in Carroll Co., Maryland (7/4/2019). Photo by Josh Emm. (MBP list)

Butterfly Weed blooming in Garrett Co., Maryland (7/24/2019). Photo by William Blauvelt. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/11/2019). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed blooming in Garrett Co., Maryland (7/24/2019). Photo by William Blauvelt. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/16/2019). Photo by Matthew Beziat. (MBP list)

Butterfly Weed blooming in Anne Arundel Co., Maryland (6/21/2017). Photo by Matthew Beziat. (MBP list)

Butterfly Weed blooming in Montgomery Co., Maryland (6/6/2019). Photo by Robert Ferraro. (MBP list)

Butterfly Weed blooming in Worcester Co., Maryland (7/5/2015). Photo by Scott Housten. (MBP list)

Butterfly Weed blooming in Worcester Co., Maryland (7/5/2015). Photo by Scott Housten. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/13/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/1/2019). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Talbot Co., Maryland (6/16/2019). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/30/2016). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Howard Co., Maryland (6/17/2020). (c) jack, some rights reserved (CC BY-NC). Photo by jack via iNaturalist. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/28/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/28/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/1/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/1/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/1/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/1/2020). (c) mixibirder, some rights reserved (CC BY-NC). Photo by mixibirder via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/2/2020). (c) farmfishmonger, some rights reserved (CC BY-NC). Photo by farmfishmonger via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/4/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/4/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Calvert Co., Maryland (7/6/2020). (c) mminmd, some rights reserved (CC BY-NC). Photo by mminmd via iNaturalist. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/8/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2020). (c) pgkaestner, some rights reserved (CC BY-NC). Photo by Peter Kaestner via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/13/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/13/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Baltimore City, Maryland (7/14/2014). (c) dequanabrams, some rights reserved (CC BY-NC). Photo by dequanabrams via iNaturalist. (MBP list)

Butterfly Weed in Maryland (Date obscured). (c) treichard, all rights reserved. Photo by Timothy Reichard. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/12/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/27/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/27/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/27/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/27/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/29/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Washington Co., Maryland (7/10/2020). (c) Bob Schwartz, some rights reserved (CC BY). Photo by Bob Schwartz via iNaturalist. (MBP list)

Butterfly Weed in Washington Co., Maryland (7/10/2020). (c) Bob Schwartz, some rights reserved (CC BY). Photo by Bob Schwartz via iNaturalist. (MBP list)

Butterfly Weed in Washington Co., Maryland (7/10/2020). (c) Bob Schwartz, some rights reserved (CC BY). Photo by Bob Schwartz via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/28/2016). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/23/2020). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/21/2020). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/10/2020). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (8/8/2020). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/12/2015). (c) Mark Eanes, some rights reserved (CC BY). Photo by Mark Eanes. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/4/2020). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC). Photo by Jim Moore. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/4/2020). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC). Photo by Jim Moore. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/10/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/10/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/10/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/10/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Baltimore Co., Maryland (6/27/2020). (c) Pat Treece, some rights reserved (CC BY-NC). Photo by ptreece via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/12/2021). (c) rwilliams208, some rights reserved (CC BY-NC). Photo by rwilliams208 via iNaturalist. (MBP list)

Butterfly Weed in Baltimore City, Maryland (6/12/2021). No rights reserved. Photo by Ian via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/21/2021). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/21/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/21/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/24/2021). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) johnbotany, some rights reserved (CC BY-NC). Photo by John Hall. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/27/2021). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/27/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/27/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/27/2021). (c) apistopanchax, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/3/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/3/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Carroll Co., Maryland (6/29/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Carroll Co., Maryland (6/29/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/3/2021). (c) spyingnaturalist, some rights reserved (CC BY-NC). Photo by spyingnaturalist via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/3/2021). (c) spyingnaturalist, some rights reserved (CC BY-NC). Photo by spyingnaturalist via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/3/2021). (c) spyingnaturalist, some rights reserved (CC BY-NC). Photo by spyingnaturalist via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/4/2021). (c) veganbigmac, some rights reserved (CC BY-NC). Photo by veganbigmac via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/4/2021). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (7/5/2021). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Carroll Co., Maryland (7/7/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/26/2021). (c) Katja Schulz, some rights reserved (CC BY). Photo by Katja Schulz via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/26/2021). (c) Katja Schulz, some rights reserved (CC BY). Photo by Katja Schulz via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/26/2021). (c) Katja Schulz, some rights reserved (CC BY). Photo by Katja Schulz via iNaturalist. (MBP list)

Butterfly Weed in St. Mary's Co., Maryland (6/27/2021). (c) Benji Beluga, some rights reserved (CC BY-NC). Photo by Ben Springer. (MBP list)

Butterfly Weed in St. Mary's Co., Maryland (6/27/2021). (c) Benji Beluga, some rights reserved (CC BY-NC). Photo by Ben Springer. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/18/2021). (c) Super Nature Lover, some rights reserved (CC BY-NC). Photo by kimberlybooth via iNaturalist. (MBP list)

Butterfly Weed in Garrett Co., Maryland (7/21/2021). (c) Ted Judy, some rights reserved (CC BY-NC). Photo by tedjudy via iNaturalist. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (7/18/2021). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Garrett Co., Maryland (7/23/2021). (c) aaron graham, some rights reserved (CC BY-NC). Photo by aaron_graham via iNaturalist. (MBP list)

Butterfly Weed in St. Mary's Co., Maryland (7/3/2021). (c) jtylerbell, some rights reserved (CC BY-NC). Photo by Tyler Bell. (MBP list)

Butterfly Weed in St. Mary's Co., Maryland (7/3/2021). (c) jtylerbell, some rights reserved (CC BY-NC). Photo by Tyler Bell. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/29/2021). (c) bbuzas, some rights reserved (CC BY-NC). Photo by bbuzas via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/29/2021). (c) bbuzas, some rights reserved (CC BY-NC). Photo by bbuzas via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/29/2021). (c) Super Nature Lover, some rights reserved (CC BY-NC). Photo by kimberlybooth via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (8/3/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (8/3/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (8/3/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (8/3/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (8/3/2021). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/17/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/17/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/20/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/25/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Carroll Co., Maryland (6/29/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in St. Mary's Co., Maryland (8/21/2021). (c) Benji Beluga, some rights reserved (CC BY-NC). Photo by Ben Springer. (MBP list)

Butterfly Weed in St. Mary's Co., Maryland (7/21/2021). (c) Benji Beluga, some rights reserved (CC BY-NC). Photo by Ben Springer. (MBP list)

Butterfly Weed in Garrett Co., Maryland (7/22/2018). (c) Kyle Klotz, all rights reserved. Photo by Kyle Klotz. (MBP list)

Butterfly Weed in Washington Co., Maryland (6/24/2018). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

Butterfly Weed in Garrett Co., Maryland (8/21/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Garrett Co., Maryland (8/21/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Frederick Co., Maryland (7/2/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/10/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/10/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/11/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/12/2022). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/12/2022). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/10/2022). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/10/2022). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/15/2022). (c) Karen Elizabeth, all rights reserved. Photo by Karen Elizabeth via iNaturalist. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/15/2022). (c) Karen Elizabeth, all rights reserved. Photo by Karen Elizabeth via iNaturalist. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/15/2022). (c) Karen Elizabeth, all rights reserved. Photo by Karen Elizabeth via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/15/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/15/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/15/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in St. Mary's Co., Maryland (6/21/2022). (c) Scott Clark, some rights reserved (CC BY). Photo by sfc155 via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/23/2022). (c) sallywilly, some rights reserved (CC BY-NC). Photo by sallywilly via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/25/2022). (c) kwixted0, some rights reserved (CC BY-NC). Photo by Kerry Wixted. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/2/2022). (c) smuller, some rights reserved (CC BY-NC). Photo by Sue Muller. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/3/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/3/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/3/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Frederick Co., Maryland (6/10/2022). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Frederick Co., Maryland (6/10/2022). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/7/2022). (c) DaphyLee153, some rights reserved (CC BY-NC). Photo by DaphyLee153 via iNaturalist. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/25/2022). Photo by Jim Moore. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/12/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (7/14/2022). No rights reserved. Photo by Sam Droege. (MBP list)

Butterfly Weed in Washington Co., Maryland (7/10/2022). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/29/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/29/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/29/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/29/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/29/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/29/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (6/27/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/17/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/17/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/18/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/18/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/17/2022). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/17/2022). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/25/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/26/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/26/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Kyle Klotz, all rights reserved. Photo by Kyle Klotz. (MBP list)

Butterfly Weed in Charles Co., Maryland (7/6/2022). Photo by Julie Simpson. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/28/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/28/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (Date obscured). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/31/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/31/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/31/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (Date obscured). (c) Jonathan Irons, some rights reserved (CC BY-NC). Photo by Jonathan Irons. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (8/8/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Garrett Co., Maryland (8/2/2022). (c) Birder20714, some rights reserved (CC BY-NC). Photo by Jim Stasz. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (8/10/2022). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (8/14/2022). (c) kmis9013, some rights reserved (CC BY-NC). Photo by kmis9013 via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (8/14/2022). (c) kmis9013, some rights reserved (CC BY-NC). Photo by kmis9013 via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (8/14/2022). (c) kmis9013, some rights reserved (CC BY-NC). Photo by kmis9013 via iNaturalist. (MBP list)

Butterfly Weed in Kent Co., Maryland (6/15/2020). (c) Judy Gallagher, some rights reserved (CC BY-NC). Photo by Judy Gallagher. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/20/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/20/2022). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Frederick Co., Maryland (7/10/2022). (c) smuller, some rights reserved (CC BY-NC). Photo by Sue Muller. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/28/2020). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/10/2022). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/25/2021). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (8/20/2022). (c) Rob Keeney, some rights reserved (CC BY-NC). Photo by Rob Keeney via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (8/20/2022). (c) bugzilla, some rights reserved (CC BY-NC). Photo by bugzilla via iNaturalist. (MBP list)

Butterfly Weed in Garrett Co., Maryland (7/3/2022). (c) Bill Blauvelt, some rights reserved (CC BY-NC). Photo by Bill Blauvelt via iNaturalist. (MBP list)

Butterfly Weed in Garrett Co., Maryland (7/3/2022). (c) Bill Blauvelt, some rights reserved (CC BY-NC). Photo by Bill Blauvelt via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Claire Ciafré, some rights reserved (CC BY-NC). Photo by Claire Ciafré via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Claire Ciafré, some rights reserved (CC BY-NC). Photo by Claire Ciafré via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (5/31/2023). (c) aaronr, some rights reserved (CC BY-NC). Photo by Aaron via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/18/2020). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/5/2023). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/5/2023). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Washington Co., Maryland (7/28/2018). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/19/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/17/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/17/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/17/2022). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/14/2023). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/16/2023). (c) aaronr, some rights reserved (CC BY-NC). Photo by Aaron via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/11/2023). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/11/2023). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/11/2023). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/11/2023). (c) Emily Summerbell, some rights reserved (CC BY). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/18/2023). (c) bbuzas, some rights reserved (CC BY-NC). Photo by bbuzas via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/18/2023). (c) bbuzas, some rights reserved (CC BY-NC). Photo by bbuzas via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/18/2023). (c) bbuzas, some rights reserved (CC BY-NC). Photo by bbuzas via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Garrett Co., Maryland (7/14/2021). (c) aaron graham, some rights reserved (CC BY-NC). Photo by aaron_graham via iNaturalist. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/19/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/19/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Kent Co., Maryland (6/17/2023). (c) Judy Gallagher, some rights reserved (CC BY-SA). Photo by Judy Gallagher. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/3/2017). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Washington Co., Maryland (6/24/2023). (c) pgwamsley, some rights reserved (CC BY-NC). Photo by pgwamsley via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/13/2014). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/28/2023). (c) Jim, some rights reserved (CC BY-NC). Photo by Jim via iNaturalist. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (6/25/2023). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/4/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (7/3/2023). (c) kristin-marie, some rights reserved (CC BY-NC). Photo by kristin-marie via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (7/3/2023). (c) kristin-marie, some rights reserved (CC BY-NC). Photo by kristin-marie via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (7/3/2023). (c) kristin-marie, some rights reserved (CC BY-NC). Photo by kristin-marie via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (7/3/2023). (c) kristin-marie, some rights reserved (CC BY-NC). Photo by kristin-marie via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (7/3/2023). (c) kristin-marie, some rights reserved (CC BY-NC). Photo by kristin-marie via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (7/3/2023). (c) kristin-marie, some rights reserved (CC BY-NC). Photo by kristin-marie via iNaturalist. (MBP list)

Butterfly Weed in Queen Anne's Co., Maryland (7/6/2023). (c) smartinbiologist, some rights reserved (CC BY-NC). Photo by smartinbiologist via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Brady O'Brien, some rights reserved (CC BY-NC). Photo by brady_obrien via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/5/2020). (c) Stephen John Davies, some rights reserved (CC BY-NC). Photo by Stephen John Davies via iNaturalist. (MBP list)

Butterfly Weed in Baltimore Co., Maryland (7/10/2021). (c) the swamp ass, some rights reserved (CC BY). Photo by swamp ass via iNaturalist. (MBP list)

Butterfly Weed in Baltimore Co., Maryland (7/10/2021). (c) the swamp ass, some rights reserved (CC BY). Photo by swamp ass via iNaturalist. (MBP list)

Butterfly Weed in Baltimore Co., Maryland (7/10/2021). (c) the swamp ass, some rights reserved (CC BY). Photo by swamp ass via iNaturalist. (MBP list)

Butterfly Weed in Baltimore Co., Maryland (7/10/2021). (c) the swamp ass, some rights reserved (CC BY). Photo by swamp ass via iNaturalist. (MBP list)

Butterfly Weed in Baltimore Co., Maryland (7/10/2021). (c) the swamp ass, some rights reserved (CC BY). Photo by swamp ass via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/8/2023). (c) Cindi Fitzgerald, some rights reserved (CC BY-NC). Photo by cin579 via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/8/2023). (c) smuller, some rights reserved (CC BY-NC). Photo by Sue Muller. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Brady O'Brien, some rights reserved (CC BY-NC). Photo by brady_obrien via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/26/2023). (c) Ken Clark, some rights reserved (CC BY). Photo by Ken Clark via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/14/2023). (c) crisnici, some rights reserved (CC BY-NC). Photo by crisnici via iNaturalist. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/15/2023). (c) smuller, some rights reserved (CC BY-NC). Photo by Sue Muller. (MBP list)

Butterfly Weed in Charles Co., Maryland (7/23/2023). (c) carriestaples, some rights reserved (CC BY-NC). Photo by carriestaples via iNaturalist. (MBP list)

Butterfly Weed in Charles Co., Maryland (7/23/2023). (c) carriestaples, some rights reserved (CC BY-NC). Photo by carriestaples via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (Date obscured). (c) Cindi Fitzgerald, some rights reserved (CC BY-NC). Photo by cin579 via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (Date obscured). (c) Cindi Fitzgerald, some rights reserved (CC BY-NC). Photo by cin579 via iNaturalist. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Clara Thiel, all rights reserved. Photo by Clara Thiel via iNaturalist. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Clara Thiel, all rights reserved. Photo by Clara Thiel via iNaturalist. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (8/4/2023). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Baltimore City, Maryland (8/5/2023). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/31/2023). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Garrett Co., Maryland (Date obscured). (c) Brady O'Brien, some rights reserved (CC BY-NC). Photo by brady_obrien via iNaturalist. (MBP list)

Butterfly Weed in Queen Anne's Co., Maryland (8/25/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Queen Anne's Co., Maryland (8/25/2023). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Queen Anne's Co., Maryland (8/22/2023). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Frederick Co., Maryland (8/30/2023). (c) RebeccaT, some rights reserved (CC BY-NC). Photo by rebeccatrussell via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (8/30/2023). (c) Sharon Vandivere, some rights reserved (CC BY-NC). Photo by Sharon Vandivere via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (8/30/2023). (c) Sharon Vandivere, some rights reserved (CC BY-NC). Photo by Sharon Vandivere via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (8/30/2023). (c) Sharon Vandivere, some rights reserved (CC BY-NC). Photo by Sharon Vandivere via iNaturalist. (MBP list)

Butterfly Weed in Harford Co., Maryland (8/1/2023). (c) keyweststyle2001, some rights reserved (CC BY-NC). Photo by keyweststyle2001 via iNaturalist. (MBP list)

Butterfly Weed in Cecil Co., Maryland (8/31/2023). (c) woodlawn, some rights reserved (CC BY-NC). Photo by woodlawn via iNaturalist. (MBP list)

Butterfly Weed in Queen Anne's Co., Maryland (9/7/2023). (c) the scelf, some rights reserved (CC BY-NC). Photo by the_scelf via iNaturalist. (MBP list)

Butterfly Weed in Baltimore City, Maryland (6/15/2023). (c) Joe MDO, some rights reserved (CC BY-NC). Photo by Joe MDO via iNaturalist. (MBP list)

Butterfly Weed in Baltimore City, Maryland (6/15/2023). (c) Joe MDO, some rights reserved (CC BY-NC). Photo by Joe MDO via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/24/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/24/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/24/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/24/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/24/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/24/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/24/2023). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Washington Co., Maryland (8/22/2023). (c) Bob Schwartz, some rights reserved (CC BY). Photo by Bob Schwartz via iNaturalist. (MBP list)

Butterfly Weed in Washington Co., Maryland (8/22/2023). (c) Bob Schwartz, some rights reserved (CC BY). Photo by Bob Schwartz via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (8/26/2023). (c) dcwahl, some rights reserved (CC BY-NC). Photo by dcwahl via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (8/26/2023). (c) dcwahl, some rights reserved (CC BY-NC). Photo by dcwahl via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (8/26/2023). (c) dcwahl, some rights reserved (CC BY-NC). Photo by dcwahl via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/8/2021). (c) Annie Weissman, some rights reserved (CC BY). Photo by wearethechampignons via iNaturalist. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/8/2021). (c) Annie Weissman, some rights reserved (CC BY). Photo by wearethechampignons via iNaturalist. (MBP list)

Butterfly Weed in Howard Co., Maryland (8/1/2023). (c) jemcfadden, some rights reserved (CC BY-NC). Photo by jemcfadden via iNaturalist. (MBP list)

Butterfly Weed in Cecil Co., Maryland (7/31/2023). (c) woodlawn, some rights reserved (CC BY-NC). Photo by woodlawn via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/6/2022). (c) Cindi Fitzgerald, some rights reserved (CC BY-NC). Photo by cin579 via iNaturalist. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (7/15/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) johnbotany, all rights reserved. Photo by John Hall. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) johnbotany, all rights reserved. Photo by John Hall. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) johnbotany, all rights reserved. Photo by John Hall. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (7/1/2023). (c) epic2112, some rights reserved (CC BY-NC). Photo by epic2112 via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/29/2023). (c) crisnici, some rights reserved (CC BY-NC). Photo by crisnici via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/25/2023). (c) Aidan, some rights reserved (CC BY-NC). Photo by aidanrf via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/25/2023). (c) jugbayjs, some rights reserved (CC BY-NC). Photo by jugbayjs via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/25/2023). (c) jugbayjs, some rights reserved (CC BY-NC). Photo by jugbayjs via iNaturalist. (MBP list)

Butterfly Weed in Howard Co., Maryland (6/26/2023). (c) russruffing, some rights reserved (CC BY-NC). Photo by russruffing via iNaturalist. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/25/2023). (c) madsenmel, some rights reserved (CC BY-NC). Photo by madsenmel via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/14/2023). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/14/2023). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/14/2023). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Butterfly Weed in Prince George's Co., Maryland (6/10/2023). (c) Adrienne van den Beemt, some rights reserved (CC BY). Photo by Adrienne van den Beemt. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/11/2023). (c) Jane Hartman, all rights reserved. Photo by Jane Hartman. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/13/2023). (c) Jane Hartman, all rights reserved. Photo by Jane Hartman. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/6/2023). (c) Jane Hartman, all rights reserved. Photo by Jane Hartman. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/6/2023). (c) Jane Hartman, all rights reserved. Photo by Jane Hartman. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/7/2023). (c) Jane Hartman, all rights reserved. Photo by Jane Hartman. (MBP list)

Butterfly Weed in Montgomery Co., Maryland (6/15/2020). (c) Jane Hartman, all rights reserved. Photo by Jane Hartman. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Kyle Klotz, all rights reserved. Photo by Kyle Klotz. (MBP list)

Butterfly Weed in Kent Co., Maryland (6/5/2024). (c) Cole Tiemann, some rights reserved (CC BY-NC). Photo by Cole Tiemann via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/10/2024). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/10/2024). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/10/2024). (c) Robert Ferraro, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/16/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/16/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/16/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/16/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/16/2024). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/16/2024). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

Butterfly Weed in Caroline Co., Maryland (5/31/2024). (c) Judy Gallagher, some rights reserved (CC BY-SA). Photo by Judy Gallagher. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/21/2024). (c) Jonathan Irons, some rights reserved (CC BY-NC). Photo by Jonathan Irons via iNaturalist. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (6/23/2024). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/23/2024). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Butterfly Weed in Allegany Co., Maryland (Date obscured). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/29/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/29/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/29/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/29/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/22/2024). (c) Mark Eanes, some rights reserved (CC BY). Photo by Mark Eanes. (MBP list)

Butterfly Weed in Worcester Co., Maryland (Date obscured). (c) bbuzas, some rights reserved (CC BY-NC). Photo by bbuzas via iNaturalist. (MBP list)

Butterfly Weed in Worcester Co., Maryland (Date obscured). (c) bbuzas, some rights reserved (CC BY-NC). Photo by bbuzas via iNaturalist. (MBP list)

Butterfly Weed in Cecil Co., Maryland (7/31/2024). (c) Jim Brighton, some rights reserved (CC BY-NC). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/3/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/3/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/3/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/3/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/3/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Caroline Co., Maryland (8/3/2024). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Butterfly Weed in Frederick Co., Maryland (8/3/2024). (c) jah956, some rights reserved (CC BY-NC). Photo by jah956 via iNaturalist. (MBP list)

Butterfly Weed in Frederick Co., Maryland (8/3/2024). (c) jah956, some rights reserved (CC BY-NC). Photo by jah956 via iNaturalist. (MBP list)

Butterfly Weed in Carroll Co., Maryland (8/10/2024). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Carroll Co., Maryland (8/10/2024). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Carroll Co., Maryland (8/10/2024). (c) Ron Wertz, some rights reserved (CC BY-NC-SA). Photo by Ron Wertz via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/9/2024). (c) Birder20714, some rights reserved (CC BY-NC). Photo by Jim Stasz. (MBP list)

Butterfly Weed in Baltimore Co., Maryland (7/30/2024). (c) richard crook, some rights reserved (CC BY-NC). Photo by rwcrook via iNaturalist. (MBP list)

Butterfly Weed in Caroline Co., Maryland (9/7/2024). (c) paul dennehy, some rights reserved (CC BY-NC). Photo by Paul Dennehy. (MBP list)

Butterfly Weed blooming in Allegany Co., Maryland (6/18/2016). Photo by Bill Hubick. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/1/2020). Photo by Mark Eanes. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/30/2018). Photo by Kimberly Booth. (MBP list)

Butterfly Weed in Queen Anne's Co., Maryland (6/13/2015). Photo by Dan Small. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (7/30/2016). Photo by Jim Brighton. (MBP list)

Butterfly Weed in St. Mary's Co., Maryland (6/9/2018). Photo by Tyler Bell. (MBP list)

Butterfly Weed in Worcester Co., Maryland (6/26/2019). Photo by Lori Byrne. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (7/10/2005). Photo by Sue Muller. (MBP list)

Butterfly Weed in Anne Arundel Co., Maryland (9/5/2017). Photo by Matthew Beziat. (MBP list)

Butterfly Weed in Worcester Co., Maryland (7/30/2016). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (10/11/2019). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Dorchester Co., Maryland (10/19/2019). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/22/2019). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Garrett Co., Maryland (7/5/2019). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Worcester Co., Maryland (5/25/2019). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (7/6/2020). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Allegany Co., Maryland (7/18/2020). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Caroline Co., Maryland (6/25/2016). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Talbot Co., Maryland (7/4/2016). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/2/2016). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Caroline Co., Maryland (7/2/2016). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Wicomico Co., Maryland (7/2/2016). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Howard Co., Maryland (6/25/2010). Photo by Bill Harms. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/26/2015). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/26/2015). Photo by Jim Brighton. (MBP list)

Butterfly Weed in Allegany Co., Maryland (6/26/2015). Photo by Jim Brighton. (MBP list)


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