About
Eryngium bourgatii, the Mediterranean sea holly, is a compact, clump-forming perennial to around 45 cm with deeply divided, silvery-veined, spiny, dark-green leaves and small, rounded, blue-green flowerheads surrounded by narrow, blue-grey bracts in summer. One of the most ornamental and rewarding compact sea hollies.
About the genus
Eryngium, the sea hollies, are biennials and perennials with spiny-margined, often architectural leaves and distinctive, dome-shaped flowerheads surrounded by spiny bracts, often in metallic shades of blue, silver or purple. Drought-tolerant and ornamental, they are grown in sunny, well-drained borders.
Plant details
Suggested usesBedding, containers, hanging baskets.
Care notes
CultivationPlant out after last frost in fertile, well-drained soil.
PruningDeadhead regularly to prolong flowering.
PropagationGrow from seed sown in spring.
Pest resistanceGenerally pest-free. Monitor for common garden pests.
Disease resistanceGenerally disease-resistant. Ensure good air circulation.