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Product Description
Eryngium alpinum Blue Star is a dramatic hardy perennial that's also known as the Sea Holly. Large prickly cone-like centres surrounded by silvery blue spiny bracts on deep blue stems. A versatile plant, it's an incredibly popular choice for bouquets and dried flower displays and in the garden it will happily grow in a sunny border or in containers. Highly attractive to butterflies. Height 50-60 cm. Flowers July to September. First grade loose root plants supplied. On the RHS list noted for plants for pollinators.
For more varieties, please browse our full range of Eryngiums
Plant Size
| Mature Height | 60 cm |
|---|---|
| Mature Spread | 45 cm |
| Plant Spacing | 35 cm |
Planting Notes
| Planting | Plant in well dug prepared soil, and add a little manure or organic matter if possible. |
|---|---|
| Soil Type | Well drained, fertile soil |
Growing at a glance…
Cut back eryngiums when their blooms begin to fade, as this will help encourage future growth. Plant in well-dug and prepared soil. Protect them from excessive winter wet. Ideal for planting in containers and front of border displays. To plant loose roots, soak them in a bucket of water for 1-3 hours before planting, then dig a hole in the border that’s big enough to house the root system. Firm in gently and water well.