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Great Ragweed (Ambrosia trifida)

  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: Carl Axel Magnus Lindman (1856-1928) | ęBilder ur Nordens F... | License: PD Old PD-Art (PD-old)
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: Carl Axel Magnus Lindman (1856-1928) | ęBilder ur Nordens F... | License: PD USDA
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: Carl Axel Magnus Lindman (1856-1928) | ęBilder ur Nordens F... | License: PD USDA
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: NRCS National Wetland Team, Fort Worth, TX. | Midwest wetland flora: Field office illustrated guide to plant species[1] | License: PD USDA NRCS
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: Cody Hough | Own work | License: CC-BY-SA-3.0 GFDL
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: GTBacchus | Own work by uploader | License: CC-BY-SA-3.0 GFDL
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: GTBacchus | Own work by uploader | License: CC-BY-SA-3.0 GFDL
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: GTBacchus | Own work by uploader | License: CC-BY-SA-3.0 GFDL
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: GTBacchus | Own work by uploader | License: CC-BY-SA-3.0-migrated GFDL
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: GTBacchus | Own work by uploader | License: CC-BY-SA-3.0-migrated GFDL
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: GTBacchus | Own work by uploader | License: CC-BY-SA-3.0 GFDL
  • Great Ragweed (Ambrosia Trifida) https://www.sagebud.com/great-ragweed-ambrosia-trifida/
    Credit: GTBacchus | Own work by uploader | License: CC-BY-SA-3.0 GFDL
AMTR.jpg

Ambrosia Trifida, or more commonly know as Great Ragweed, is a subshrub forb/herb of the genus Ambrosia. Its duration is annual which means it grows for one season only. Ambrosia Trifida or Great Ragweed's floral region is North America US Lower 48, specifically in the states of Alabama, Arkansas, Arizona, California, Colorado, Connecticut, Delaware, Florida, Georgia, Iowa, Idaho, Illinois, Indiana, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Vermont, Washington, Wisconsin and Wyoming.

  • Category: Dicot
  • Genus: Ambrosia
  • Family: Asteraceae
  • Order: Asterales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Annual
  • Growth Habit: Subshrub Forb/herb
  • Native Status: L48 (N) CAN (N)
  • State Noxious Status: CA (BW) DE (NW) IL (NW)
  • State Noxious Common Name: CA (giant ragweed) DE (giant ragweed) IL (giant ragweed)
  • PLANTS Invasive Status: N'EAST NE&GP STATE SWSS WSWS
  • National Wetland Indicator Status: FAC FACW
  • Regional Wetland Indicator Status: 1(FAC) 2(FAC) 3(FAC+) 4(FAC) 5(FACW) 6(FAC) 7(FACW-) 8(FAC*) 9(FAC) 0(FAC)





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