About
Cirsium rivulare Frosted Magic ('Lowcir' PBR) is a perennial that grows in clumps, reaching heights of up to 1.2 meters. It features a rosette of green foliage at the base and produces flowering stems topped with pincushion-shaped white flowerheads during the summer months, especially if regularly deadheaded. These blooms attract pollinators, while the seedheads offer a food source for finches.
About the genus
Cirsium includes both biennial and perennial species characterized by their spiny foliage and distinctive thistle-like flower heads.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- West-facing, South-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Semi evergreen
- Height
- 1-1.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Wildlife gardens, Prairie planting
Care notes
- Cultivation
- Grow in full sun in moist but well-drained soil
- Pruning
- No pruning required except deadheading to prolong the flowering season
- Propagation
- Propagate by division from autumn to spring or by root cuttings; propagation for resale is illegal without a licence from the breeder
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to powdery mildews