Sea holly

Eryngium planum 'Blaukappe'

Sea holly - Eryngium planum  'Blaukappe'

Common Name: Sea holly
Genus: Eryngium
Species: planum
Cultivar: 'Blaukappe'

Category: Perennials
Growth Rate: Average
Features: Makes good cut flowers, Has interesting foliage, Good for a rock garden, Provides winter colour, Long flowering period

Hardiness: HardyHeight: 0.90 m (90 cm)
Sun/Shade: Full sunSpread: 0.45 m (45 cm)

Foliage Type: Semi EvergreenFlower Colour: Blue
Foliage Colour: GreenFlowering Period: July to September

Soil Type: Sandy/Light or Chalky/Alkaline
Soil Moisture: Dry, well drained

Easily recognised by their ruff of spiky bracts surrounding a prominent cone-like centre of tiny flowers, sea hollies make a bold statement in a sunny border or gravel garden. This tall variety has masses of intense blue teasel-like flowers on branching stems from July to September. Try it en masse in the middle of a sunny well-drained border or gravel garden or among grasses. Eryngiums are also perfect for use in dried flower arrangements.

  • Garden care: Stake with twiggy pea-sticks well before the plant starts to flower. Avoid the temptation to cut back the flowerheads in autumn as they provide interest in the winter garden. Lift and divide large colonies in spring.

  • Goes well with: Perovskia 'Blue Spire', Stachys byzantina 'Silver Carpet', Euphorbia characias subspecies wulfenii 'Blue Wonder', Sedum spectabile, Crambe maritima, Stipa tenuissima.


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