Eryngium

With its spiky, silvery-blue flowers and striking, thistle-like form, Eryngium (Sea Holly) delivers a modern, architectural edge. These hardy perennials thrive in more challenging conditions, offering a dramatic focal point in sunny, well-drained spots. They provide long-lasting structure in borders and coastal gardens, combining distinctive texture with enduring appeal.

Shop Eryngium plants online

At J. Parker’s, our selection of Eryngium plants includes varieties such as the stunning Eryngium alpinum 'Blue Star’ - bringing clear blue-green tones suited to dry, sunny gardens. These resilient perennials create a bold statement throughout the summer.

Where to plant Eryngium

Eryngium thrives in full sun and well-drained soil, making it ideal for gravel gardens or coastal borders. These tough plants are best suited to dry, sandy conditions and cope well where many others fail. Avoid waterlogged soil, as excess moisture can affect plant health and longevity.

Companion plants

Pair Eryngium with other hardy, drought-tolerant perennials such as Lavender, Achillea, and Sedum for a striking, low-maintenance display. Its spiky form complements ornamental grasses like Calamagrostis or Panicum, while vibrant perennials like Rudbeckia or Echinacea bring additional colour and texture.

Growing Eryngium

Plant Eryngium in spring or autumn, watering sparingly during prolonged dry periods in the first season. Once settled, however, these hardy plants require minimal care. Cut back spent flowers in late autumn or early spring to keep your garden tidy and encourage fresh growth. As they mature, Eryngium forms dense clumps, providing structure well beyond the flowering period.