Delaware Wildflowers • Months

Giant Ragweed
Ambrosia trifida
Asteraceae — Aster family
Native
Giant Ragweed
Giant Ragweed
Carousel Farm Park
August 2003
Giant Ragweed
White Clay Creek State Park -- Possum Hill
June 2021
Giant Ragweed
Giant Ragweed
Staminate flowers above pistillate flowers.
White Clay Creek State Park -- Possum Hill
September 2020

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Photos copyright David G. Smith

Information from the Delaware Flora Checklist used with author's permission.

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