Marsh Thistle

Cirsium palustre

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Asteraceae
Genus:
Cirsium
Species:
Cirsium palustre

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
4-6 ft
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
jun, aug
Bloom Colors:
purple

Native Range

United States: Massachusetts, Michigan, New Hampshire, New York, Wisconsin, Canada: British Columbia, Nova Scotia, Ontario, Quebec

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:
wet, peaty, nutrient-rich soil
pH:
4.5 - 6.5 (acidic to slightly acidic)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
commonly found in marshes and wet meadows