Common Ragweed

(Ambrosia artemisiifolia)

 

Color Photograph: Copyright Nearctica.com, Inc.

Line Drawing: Britton, N.L., and A. Brown. 1913. An Illustrated Flora of the Northern United States and Canada, Second Edition.

 

Common Ragweed (Ambrosia artemisiifolia)

Identification: Flowers small, green, nodding, consisting of a receptacle containing a number of small round florets. Flowers arranged in a tight, compact, terminal spike (raceme). Leaves highly dissected, fernlike. Plant 1 to 5 feet in height.

Distribution: Throughout North America.

Habitat: Common Ragweed in a ubiquitous weed found in empty fields, ditches, roadsides, and just about any form of disturbed ground.

Flowering period: August to October.

Common Ragweed (Ambrosia artemisiifolia)

Similar Species:

The fernlike, dissected leaves resemble those of species of the genus Artemisia. However the compact terminal racemes of nodding flowers are usually sufficient to identify Common Ragweed.

Similar Species

No Similar Species