The amethyst-blue flowers of this eryngium open on top of sturdy, upright stems in early and midsummer, gradually turning darker blue. It requires free-draining ground and a sunny position. Like all eryngiums, the tiny flowers are packed together in a tight cluster, surrounded by a ruff of spiny bracts. Keep away from the edge of a border if children are present because the spines are very sharp. Excellent in gravel gardens and large herbaceous borders. The flowers last well when cut and can also be dried.

Looks good with:

Artemisia 'Powis Castle'
Geranium pratense