Giant Ragweed
Ambrosia trifidaAsteraceae — Aster family
Native


Carousel Farm Park
August 2003

White Clay Creek State Park -- Possum Hill
June 2021


Staminate flowers above pistillate flowers.
White Clay Creek State Park -- Possum HillSeptember 2020
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Photos copyright David G. Smith
Information from the Delaware Flora Checklist used with author's permission.