trefle.io · Taken Jul 13, 2019 by Manu Pacha (cc-by-sa)
Asteraceae
California thistle
Cirsium arvense
Also known as Field thistle, Breea arvensis, Canada thistle, Cnicus arvensis
Native Plants · Thistle · Wildflower · Perennial · Hardy · Drought-Tolerant · Pollinator · Cirsium · Wild · Native · Low-Care
California thistle is an extremely hardy perennial that thrives with minimal care in most soil conditions. It prefers partial shade and moderate watering but can tolerate drought once established. This low-maintenance plant spreads readily and attracts beneficial pollinators.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Light to moderate watering, tolerates dry conditions well · Every 10-14 days
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 5–8
- Temperature
- -30°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4a-10b
Form & growth
Mature size and habit
- Mature height
- 2 ft – 5 ft
- Spread
- 3 ft
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Deep
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Afghanistan, Alabama, Alaska, Albania, Alberta, Algeria, Altay, Amur, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Assam, Austria, Azores, Baleares, Baltic States, Bangladesh, Belarus
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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