Sea Holly
Eryngium spp.
Also known as
Eryngo, Amethyst Sea Holly, Eringoe, Sea holly
Eryngium July 2011-1 by Alvesgaspar (CC BY-SA 3.0)
Full Sun
Moderate watering
Half-hardy
H3
RHS hardiness
-5°C
Minimum temperature
Expected size
Height | Spread | |
|---|---|---|
Max | ||
Min |
Flowering
-
spring
-
summer
-
autumn
-
winter
More images of Sea Holly
Sea Holly Overview
The genus Eryngium contains around 241 biennial and perennials, with some evergreen species, also called eryngo, amethyst sea holly and sea holly. These are typically grown for their flowers and foliage and originate from dry, rocky habitats. They possess long tap or fibrous roots and oval to heart-shaped, sometimes divided foliage. Foliage is spiny and may be silvery in colour, ranging to white or blue-green. Flowers resemble thistles and are white or blue, surrounded by showy, spikey modified leaves known as bracts. This genus contains popular ornamental species and many hybrids have been produced for garden use.
How to propagate Sea Holly
Seed
Division
Selected forms by division in the spring.
Cuttings
Root cuttings in winter.
Special features of Sea Holly
Attractive flowers
Attractive leaves
Attracts useful insects
Other uses of Sea Holly
Grown for their flowers, foliage and habit. Suitable for coastal conditions.
