Marshalls Garden Eryngium 'Big Blue', Hardy RHS AGM sea holly, 0.1 0.5m 9cm Plant - Blue / 3

For bold summer colour and architectural texture, Eryngium 'Big Blue' produces vivid blue, spiky bracts around cone-like flower heads above grey-green foliage. Flowering June to August, this low-maintenance perennial thrives in full sun and well-drained soil, tolerates drought and coastal conditions, and suits borders, gravel gardens and containers. Loved by bees, butterflies and seed-eating birds, its seedheads add frosty winter interest. Holds the RHS Award of Garden Merit.