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Blue Sea Holly

Eryngium planum, Apiaceae

Zones
4–8
Layer
Herbaceous
Lifespan
Perennial
Growth
Moderate

Guild Roles

Pollinator Attractor

Growing Conditions

Sun

Full Sun (optimal)

Water

Low

Soil pH

5.5 – 7.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Russian StonecropSedum kamtschaticum
Pollinator SharingBeneficial Insect Habitat
Globe ThistleEchinops ritro
Pollinator SharingBeneficial Insect Habitat
WoadIsatis tinctoria
Pollinator SharingBeneficial Insect Habitat

Antagonistic Plants

Blue Star CreeperIsotoma fluviatilis

Deep-rooted sea holly may compete with shallow-rooted blue star creeper

Uses

Functions

Pollinator SupportOrnamental

Common Questions

What zones does Blue Sea Holly grow in?

Blue Sea Holly grows in USDA hardiness zones 4 through 8.

What are good companion plants for Blue Sea Holly?

Good companions for Blue Sea Holly include Russian Stonecrop, Globe Thistle, Woad.

Design guilds with Blue Sea Holly and see companion relationships visually.

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