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Ambrosia trifida
giant ragweed Aster Family
Ambrosia trifida Asteraceae
--more--
common names
  giant ragweed
  great ragweed
accepted scientific name
  Ambrosia trifida L.
rules for finding collection records
  Ambrosia trifida (4164)
family name
  Asteraceae
Image Author: ©2010 Jean Pawek
Image License: CC BY
Image Source
Category: Wildflowers
Flowers: No obvious petals
Petal colors: color
Flower size is about 0.1 inches
Leaf: Opposite
Plant Observed beginning of June thru end of October
Native, Invasive in CA, DE, IL

How Likely at this Location (94%)
Name Match (100%)
Plant Showiness (27%)
base map where plant found
mag select

Disturbed
Riparian
Forest
grid lines base