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Native Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Conyza canadensis var. glabrata (Gray) Cronq.

Canadian horseweed, Horseweed

Asteraceae (Aster Family)

Synonyms: ERCAG Erigeron canadensis L. var. glabratus A. Gray

USDA Symbol: COCAG

USDA Native Status: Native to U.S.

 

From the Image Gallery

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Plant Characteristics

Duration: Annual
Habit: Herb
Root Type: Tap
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Fruit Type: Achene
Flower:
Fruit:
Size Class: 3-6 ft.

Bloom Information

Bloom Color: White , Yellow , Purple
Bloom Time: Aug , Sep
Bloom Notes: White or purplish small ray flowers and yellow disk flowers.

Distribution

USA: AK , AZ , CA , CO , ID , NM , NV , OK , OR , RI , TX , UT , WA , WY
Canada: BC
USDA Native Status: L48(N), AK (I?)

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:

Lady Bird Johnson Wildflower Center - Austin, TX

Recommended Species Lists

Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.

View Recommended Species page

Additional resources

USDA: Find Conyza canadensis var. glabrata in USDA Plants
FNA: Find Conyza canadensis var. glabrata in the Flora of North America (if available)
Google: Search Google for Conyza canadensis var. glabrata

Metadata

Record Modified: 2011-08-06
Research By: TWC Staff

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