Canadian Horseweed

Erigeron canadensis

Canadian Horseweed

Meteorquake

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Asteraceae
Genus:
Erigeron
Species:
Erigeron canadensis

Growth Characteristics

Life Cycle:
Annual | Biennial
Growth Habit:
Forb/herb
Height:
6-8 ft
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
jul, aug, sep, oct, nov
Bloom Colors:
White

Native Range

United States: Alaska, Alabama, Arkansas, Arizona, California, Colorado, Connecticut, District of Columbia, Delaware, Florida, Georgia, Guam, Hawaii, Iowa, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, Navassa Island, New Jersey, New Mexico, Nevada, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Palau, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, U.S. Minor Outlying Islands, Utah, Virginia, Virgin Islands, Vermont, Washington, Wisconsin, West Virginia, Wyoming, Canada: Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Northwest Territories, Ontario, Prince Edward Island, Quebec, Saskatchewan

Host Plant for Caterpillars

blackberry looper (Chlorochlamys chloroleucaria), common eupithecia (Eupithecia miserulata), Cucullia florea, Sharp Stigma Looper (Ctenoplusia oxygramma), Sicya sp., sparganothis fruitworm moth (Sparganothis sulfureana), Speyer's Hooded Owlet (Cucullia speyeri), Variegated cutworm (Peridroma saucia), Wavy-lined Emerald (Synchlora aerata), Yellow-striped armyworm (Spodoptera ornithogalli), orange oakleaf (Charidryas nycteis)

Soil Requirements

Soil Type:
poor, sandy, well-drained soil
pH:
4.5 - 7.5 (acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
commonly found in disturbed areas and roadsides

Germination Information

Pre-treatment: Single-step cold-moist stratification for temperate woodland species. for 60–120 days

Notes: Seeds germinate readily without pretreatment.

Source: OpenAI GPT-4o