giant ragweed

Ambrosia trifida

Daisy family (Asteraceae) 5

Summary 6

Ambrosia trifida, the giant ragweed, is a species of flowering plant in the sunflower family. It is native to North America, where it is widespread in Canada, the United States, and northern Mexico. It is present in Europe and Asia as an introduced species, and it is known as a common weed in many regions. Its common names include great ragweed, Texan great ragweed, giant ragweed, tall ragweed, blood ragweed, perennial ragweed, hor

Learn more 5

Midwest Invasive Species Information Network.

Sources and Credits

  1. (c) KatieLMiller, some rights reserved (CC BY), uploaded by KatieLMiller, https://www.inaturalist.org/observations/7365699
  2. (c) spyingnaturalist, some rights reserved (CC BY), uploaded by spyingnaturalist, https://www.inaturalist.org/observations/92182611
  3. (c) devon_d, some rights reserved (CC BY), uploaded by devon_d, https://www.inaturalist.org/observations/32115798
  4. (c) outdoorsie, some rights reserved (CC BY), uploaded by outdoorsie, https://www.inaturalist.org/observations/95078312
  5. (c) Isaac Winkler, some rights reserved (CC BY-SA)
  6. Adapted by Isaac Winkler from a work by (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Ambrosia_trifida

More Info

iNat Map

Flower hue green/inconspicuous
Plant family Asteraceae