The Garden Community for Garden Lovers

Kerryjoe's Garden

Sea Holly

Genus: Eryngium.

Species: Eryngium planum.

Purchased from - gone blank
Purchase cost - even more blank but not a lot
Current height 2008 - 1m
Expected height - 90cm
Habit - Perennial, blue heads, architectural, summer colour
Garden placement - Full sun in my front garden
Personal notes - Sea holly has a long tap root, which makes transplanting difficult. Place seedlings in their permanent location.
Root cuttings can be taken in autumn or winter.
Seed can be sown when it ripens in early autumn. They do best if placed on the surface of well-drained compost in a cold frame. Seed can germinate in as little as five days or as long as ninety days. Seedlings should be set out the following spring after the last frost.

Photos of this plant

  • Imag0005