Alpine Sea Holly 'Blue Cap'

Eryngium planum 'Blue Cap' is a striking perennial alpine known for its intense blue, thistle-like flowers and bracts. It adds unique architectural interest to rockeries and borders with its metallic, spiky appearance.

Sun: Full sun.

Soil: Well-drained, sandy soil.

Hardiness: H7 — below −20°C.

Flowering: Jul, Aug, Sep.