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giant ragweed
Ambrosia trifida
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 (12826)
family name
  Asteraceae
Image Author: ©2015 Richard Spellenberg
Image License: CC BY-NC-SA
Image Source

Category: Wildflowers
Flowers: No obvious petals
Petal colors: color
Flower size is about 0.1 inches
Leaf: Opposite
Plant Observed last week of March thru 2nd week of November

Plant Showiness (27%)
base map where plant found
mag select

Disturbed
Riparian
Forest
Grassland
Native Plant Status
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native Native
native Not Present

Invasive in some regions.