Cirsium muticum

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Cirsium Muticum 6 Cirsium Muticum 5 Cirsium Muticum 1 Cirsium Muticum 2 Cirsium Muticum 3 Cirsium Muticum 4 Cirsium Muticum
Cirsium Muticum 6 Cirsium Muticum 5 Cirsium Muticum 1 Cirsium Muticum 2 Cirsium Muticum 3 Cirsium Muticum 4 Cirsium Muticum

Cirsium muticum

Common Name: Swamp Thistle

Cirsium muticum, known as Swamp Thistle, is a biennial that can reach heights of up to 8 feet, but is typically around 5 feet. It has spiny leaves and produces pink to purple flower heads from mid-summer to early fall. This species is commonly found in wet habitats such as swamps, bogs, and wet meadows. Swamp Thistle is suitable for naturalizing in wet areas, wetland restorations, and is a great nectar source for pollinators.

Characteristics

Type Forb
Sun Full Sun, Partial Sun
Soil Loam, Sand/Gravel, Peat, Calcareous
Moisture Wet
Average Max Height (inches) 72
Suggested Plant Spacing (inches) 30
Bloom month(s) July, August, September, October
Bloom Color or Type Violet
Dominance Low

Range Maps

Sowing Information

For most homeowners, the recommended method is to hand-broadcast seed at a minimum rate of 16–64 PLS (Pure Live Seed) ounces per acre. To ensure even coverage, broadcast the seed in perpendicular passes across the site. Grass seed should be broadcast first and lightly raked into the soil. Afterward, apply a light mulch layer using clean, seed-free straw or, preferably, our native Little Bluestem straw, available at our retail garden centers. Once mulching is complete, broadcast native wildflower seed over the area without raking it in. A good rainfall or thorough watering will provide sufficient soil contact for successful germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.