Great Ragweed
Ambrosia trifida Linnaeus var. trifida
Great Ragweed: https://marylandbiodiversity.com/species/4182
Synonyms
Ambrosia trifida trifida  Giant Ragweed 
Tags

Map Snapshot

335 Records

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Status

Great Ragweed is common across the state. It can be found in a variety of habitats including, bottomlands, rich wood edges, roadsides, and cultivated areas.

Description

Great Ragweed can grow to over ten feet tall. The three (rarely four or five) cleft leaves are diagnostic among Maryland herbaceous plants. Flowers are on long spikes or racemes.

Relationships

Host to Euaresta festiva larvae.

Host to Black-smudged Chionodes Moth. Leaves are mined by the micro-moth Astrotischeria ambrosiaeella.

Seasonality Snapshot

Resources

View at iNaturalist View at Nature Serve Search Google Images Search MBP Facebook posts
View at Maryland Plant Atlas Search Flora of North America Search Mid-Atlantic Herbaria Consortium Search Norton-Brown Herbarium
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Source: Wikipedia

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