Common Ragweed

(Ambrosia artemisiifolia)

Characteristics

Seedling	Leaves	Flowers	Fruit

Growing habit: Erect to branching summer annual herb

Root anatomy: Fibrous roots from shallow taproot

Leaf anatomy: Oppositely arranged near base, alternate apically, simple or pinnately to bipinnately lobed

Reproduction: Male and female florets separated, male heads drooping at ends of branches, female heads in axils of upper leaves and bases of leaves; woody achene fruit

^{References: Weeds of the South by Charles T. Bryson and Michael S. DeFelice}