Texan Great Ragweed
Ambrosia trifida
Also known as: great ragweed
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Ambrosia
- Species:
- Ambrosia trifida
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 12-20 ft
- Light Requirements:
- Part Shade, Shade
- Drought Tolerance:
- High
- Bloom Months:
- jun, jul, aug, sep, oct
- Bloom Colors:
- Green, Brown
Native Range
United States: Alabama, Arkansas, Arizona, California, Colorado, Connecticut, District of Columbia, Delaware, Florida, Georgia, Iowa, Idaho, Illinois, Indiana, Kansas, 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, West Virginia, Wyoming, Canada: Alberta, Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saskatchewan
Host Plant for Caterpillars
Armyworm moth (Pseudaletia unipuncta), Asymmetrura matutella, Bidens borer (Epiblema otiosana), Bucculatrix ambrosiaefoliella, Chionodes mediofuscella, Common Pinkband (Ogdoconta cinereola), Conchylodes platinalis, Cremastobombycia ambrosiella, Dichomeris juncidella, Endopiza vernoniana, Forage Looper (Caenurgina erechtea), Gnorimoschema ambrosiaeella, Green Cloverworm Moth (Hypena scabra), mayapple borer (Papaipema rutila), Olethreutes osmundana, Plagiomimicus pityochromus, Ragweed Borer Moth (Epiblema strenuana), Schinia bifascia, soft-lined wave (Scopula inductata), stalk borer moth (Papaipema nebris), Thoreau's flower moth (Schinia thoreaui), Tischeria ambrosiaeella, Tischeria heliopsisella, Tischeria occidentalis, Tricholita signata, Virginia Tiger Moth (Spilosoma virginica), Bordered Patch (Chlosyne lacinia), Charidryas gorgone, Hoary Comma (Polygonia gracilis)
Soil Requirements
- Soil Type:
- rich, moist, well-drained loamy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- Commonly found in floodplains and disturbed areas