Sea Holly
Sea holly is a perennial flower grown for its amazingly geometrical flowers. The shimmery blue flowers are composed of a cone surrounded by a ring of stiff, narrow bracts. The leaves grow as a basal rosette of heart-shaped leaves.
After flowering, the seedhead forms a round, textured ball, adding extra interest to the landscape.
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Sea Holly
Sea holly is a perennial flower grown for its amazingly geometrical flowers. The shimmery blue flowers are composed of a cone surrounded by a ring of stiff, narrow bracts. The leaves grow as a basal rosette of heart-shaped leaves.
After flowering, the seedhead forms a round, textured ball, adding extra interest to the landscape.
Plant details
Botanic Name
Eryngium planum 'Blaukappe'
Pronunciation
er-RIN-jee-um PLAN-um
Mature Height
15 to 24 in.
Mature Spread
10 to 15 in.
Water usage
Water Usage
One Droplet: Water twice per month or less, once established.
Two Droplets: Water about once per week, once established.
Three Droplets: Water about twice per week, once established.
Flower Color
blue
Bloom time
summer
Colorado Native
No
Natural Habitat
species is native to Europe
Light Requirements
sun
Cold Hardiness
USDA zones 5-8
Elevation Limit
hardy to 6,500 ft.
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