Spiny metallic-blue flowers in late summer. Position: full sun Soil: moist, well-drained soil Rate of growth: average Flowering period: August to October Hardiness: fully hardy This delightful sea holly has long lasting flowers that arrive in mid- to late summer, turning bright metallic-blue as they age and usually lasting well into the autumn. They have a strong architectural shape, so are best in uncrowded borders where they can really stand out on their own. Honey bees love their flowers so they are perfect for adding to a sunny, wildlife-friendly garden. Garden care: Lift and divide large colonies in spring. Avoid the temptation to cut back the flowerheads in autumn as they provide interest in the winter garden.
