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Eryngium or 'Sea Holly'

A wonderful colourful and textural addition to the garden border are Eryngium or 'Sea Holly'. A number of species and cultivars are available for sale including the popular Eryngium Giganteum 'Miss Willmott's Ghost' with its white / grey flowers and the slightly smaller growing Eryngium x oliverianum with its steel blue flowers (height around 90cm).

The attractive blue flowers ( or white) are the main reason for growing this drought tolerant plant however the thistle like foliage is a great addition as well. Bees and birds love the flowers as well which appear in summer.

Eryngium yuccifolium

The foliage of Eryngium species does vary greatly, E. yuccifolium has broad pale blue/green upright foliage, (see image right) small spines on the edge. E.varifolium has deep green heavily veined foliage, large and rounded with scalloped edges.

Eryngium varieties and species

  • Eryngium amethystinum Sapphire Blue - Sea Holly or Amethyst Sea Holly is a popular cultivar. A tall erect plant with fascinating 'metallic' steel blue flower heads in summer,
  • Eryngium amethystinum Sapphire Blue is a stunning clump forming perennial plant that grows best in a well drained soil in full sun.
  • Other Species include: Eryngium planum, eryngium yuccifolium, eryngium alpinum, eryngium giganteum, eryngium agavifolium, eryngium bourgatii and eryngium maritimum

Where to buy


500 N. Sequim Ave. Sequim, WA 98382
Small mail order nursery with a very intersting range of perennials and other plants.