Rough Thistle

Cirsium scabrum

Rough Thistle

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