Eryngium agavifolium

sea holly

• Position: full sun
• Soil: moist, well-drained soil
• Rate of growth: average
• Flowering period: August
• Flower colour: greenish white
• Other features: superb foliage
• Hardiness: fully hardy
  
  An unusual sea holly, which (as the name suggests) closely resembles an agave. The sword-shaped leaves produce a basal rosette and are edged with soft spines. In late summer, upright branching stems carry greenish white flowerheads. This wonderful perennial is valued for its interesting silhouette and architectural foliage.
  
  
• Garden care: Lift and divide large colonies in spring. Avoid the temptation to cut back the flowerheads in autumn as they provide interest in the winter garden

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