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Product Description
Cirsium Muticum, also known as Swamp Thistle, produces vibrant, colorful blooms that attract pollinators and bring dynamic interest to garden beds, borders, and naturalized areas. This heirloom variety is easy-to-grow, low-maintenance, and ideal for gardeners seeking long-lasting flowers that add both beauty and ecological value to their outdoor spaces.
Features:
Cirsium Muticum variety
Produces vibrant, colorful blooms
Easy-to-grow and low-maintenance
Attracts pollinators such as bees and butterflies
Ideal for garden beds, borders, and naturalized planting areas
Specifications:
Plant Type: Perennial flowering plant
Height: 3–5 feet
Bloom Time: Summer to early fall
Light Requirements: Full sun to partial shade
Soil Preference: Moist, well-draining soil
Zones: USDA hardiness zones 4–9
Planting Season: Spring after last frost
Planting & Sowing Instructions:
Indoor Sowing: Sow seeds in small pots with well-draining soil 6–8 weeks before the last frost. Lightly press seeds into soil and keep moderately moist. Germination typically occurs in 14–21 days.
Transplanting: Move seedlings outdoors after frost risk has passed. Space plants 18–24 inches apart to accommodate growth.
Direct Sowing: Sow seeds directly into prepared garden soil in spring after the last frost. Cover lightly and water gently.
Care Tips: Maintain even soil moisture without waterlogging. Deadhead spent blooms to encourage continued flowering. Mulching helps retain moisture and regulate soil temperature.

Life Cycle
Biennial perennial plant
Planting Season
Cool season sowing
Growth Habit
Tall upright plant
Flavor Profile
Not applicable ornamental
Plant Characteristics
Soft purple blooms
Use
Pollinator habitat planting
Growing Conditions
Moist sunny soils
Harvest Advantages
Long nectar period
Plant Resistance
Cold hardy plant
Scientific Name: Cirsium muticum
Seed Names
Cirsium muticum seeds
Seed Type
Heirloom non GMO
Cirsium muticum, commonly known as Swamp Thistle, is a native heirloom wildflower valued for its vibrant purple blooms and exceptional pollinator support. These GMO-free seeds grow into elegant, non-invasive plants ideal for home gardens, naturalized areas, pollinator meadows, and moisture-retentive landscapes.
Light Requirement
Full sun
Planting Depth
Surface light covering
Sowing Method
Cold stratified sowing
Plant Spacing
18–24 inches
Days to Maturity
120–150 days
Soil Preparation
Moist fertile soil
Hardiness Zones
Zones 3–8
Water Needs
Moderate consistent moisture
Planting Season
Early spring sowing
Seed Count
Recommended Coverage
100
Up to 40 sq ft
500
Up to 200 sq ft
1000
Up to 400 sq ft