Arroyo Seco Native Plants
$4.75–$120.00Distance unavailable · 5628 York Blvd, Los Angeles, CA 90042
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trefle.io · Taken Aug 20, 2019 by Josef Berkemeyer (cc-by-sa)
Asteraceae
Horseweed
Erigeron canadensis
Also known as Erigeron canadensis var. glabratus, Conyza canadensis var. glabrata, Erigeron ruderalis, Erigeron canadensis var. pusillus
Zones 4–10Sun Full SunWater LowCare Low
Flowering Plants · Native Plants · Horseweed · Annual · Wildflower · Drought-Tolerant · Self-Seeding · Pollinator-Plant · Erigeron · Weedy · Hardy
Pet-safeBeginner-friendlyMedicinalAttracts pollinators
In stock at 1 nurseryStock updated 9/6/2026
Horseweed is an extremely hardy annual that thrives in disturbed soils and requires virtually no care. It self-seeds prolifically and can become weedy, so deadheading before seed set is recommended. This tough plant provides late-season nectar for pollinators when few other flowers are available.
Growing conditions
The details behind the basics
- Daily light
- 8 hours
- Watering
- Water lightly, very drought tolerant once established · Every 14-21 days
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 4.8–7.2
- Temperature
- -30°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4a-10b
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Form & growth
Mature size and habit
- Mature height
- 2 ft – 5 ft
- Spread
- 12 in
- Spacing
- 6 in apart
- Growth rate
- Fast
- Root depth
- Deep
- Flowers
- White, Yellow
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Afghanistan, Alabama, Albania, Alberta, Algeria, Altay, Amur, Angola, Arizona, Arkansas, Assam, Austria, Azores, Bahamas, Baleares, Baltic States, Bangladesh, Belarus, Belgium, Belize
- Attracts
- Bees, Butterflies, Birds
Sources: trefle, usda
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