Rough Thistle
Cirsium scabrum
Denis Barthel
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Cirsium
- Species:
- Cirsium scabrum
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- may
Native Range
United States: California
Keystone Species Ranking
- Bee Keystone:
- ★★☆☆☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)
Soil Requirements
- Soil Type:
- well-drained, sandy or rocky soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to Mediterranean regions, prefers open, sunny locations