giant ragweed USDA PLANTS Symbol: AMTR
U.S. Nativity: Native
Habit: Shrub or Subshrub Forbs/Herbs
Ambrosia trifida L.

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Taxonomic Rank: Magnoliopsida: Asterales: Asteraceae
Synonym(s): blood ragweed, great ragweed, horseweed, perennial ragweed (great), tall ragweed

Selected Images from Invasive.orgView All Images at Invasive.org


Plant(s); June. Photo from Forest Plants of the Southeast and Their Wildlife Uses by J.H. Miller and K.V. Miller, published by The University of Georgia Press in cooperation with the Southern Weed Science Society.
James H. Miller & Ted Bodner, Southern Weed Science Society, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
John D. Byrd, Mississippi State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
John D. Byrd, Mississippi State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Chris Evans, University of Illinois, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Chris Evans, University of Illinois, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Chris Evans, University of Illinois, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Lynn Sosnoskie, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Bruce Ackley, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Bruce Ackley, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Bruce Ackley, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Stem(s);
Bruce Ackley, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Seed(s);
Bruce Ackley, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.


Invasive Listing Sources: