Delaware Wildflowers • Guides

Arctium — the Burdocks
Two species in Delaware, both alien.

Arctium lappa, Great Burdock
Flower heads 1" or more in diameter on long stalks. Up to 9' tall.

Arctium minus, Lesser Burdock
Flower heads 1" or less in diameter, on short stalks or stalkless. Up to 5' tall.

Sources: The Flora of Delaware, Herbaceous Plants of Maryland.

Copyright David G. Smith

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