Common Ragweed

Scientific Name:   Ambrosia artemisiifolia


Non-showy, wind-pollinated flowers, irritating allergies. Aster family (flower heads composed of multiple florets, often disk flowers or both disk and ray flowers).

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Common Ragweed


Genus species: Ambrosia artemisiifolia
Common Name: Common Ragweed
Family Name: Asteraceae  
Flowers of two basic types: 1) disk florets with tubular corollas, and 2) ray florets with ligulate corollas. Heads are composed of exclusively one type or the other (discoid or ligulate), or typically with disk florets in the center and ray florets around the perimeter; fruit an achene (or cypsela).
Seed Type Angiosperm
Origin:  
Native: native to North America.
Non-native: not native to North America.
Introduced Native: native to North
America, but not Rowe Woods.
* Definitions based on the USDA
terminology
Native
Category:Wildflower
Flower Color:Green/Brown Yellow
Identified by:A. Swanson
Months in Bloom  
The highlighted month(s) in this chart indicates the month(s) the plant has been observed blooming.
Jan Feb Mar Apr May Jun
Jul Aug Sep Oct Nov Dec