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Sea Holly

Eryngium Maritimum

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Overview

Sea Holly, or Eryngium maritimum, is a striking perennial suitable for coastal themes. It boasts silvery-blue, thistle-like blooms atop 2-3 feet stems, with a spread of up to 18 inches. This tough plant thrives in full sun, in well-drained soil, and tolerates drought and poor soils. Its unique texture and structure add visual interest from summer to early fall, attracting pollinators while deterring deer. USDA zones 5-9.

Sun FullWater LowZones 5–10Type PerennialClimate Temperate
Sea Holly (Eryngium Maritimum) — A resilient coastal plant; it thrives in USDA hardiness zones 5 through 9

Culture

Sun
Full
Water
Low
USDA zones
5–10

Shape & size

Mature height
2–3 Ft.
Mature width
2–3 Ft.

Classification

Type
Perennial
Family
Apiaceae (Umbelliferae)
Climate
Temperate

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Photos (137)

Sea Holly (Eryngium Maritimum) — topped with cone-shaped flower heads surrounded by a ruff of spiny bracts
Sea Holly (Eryngium Maritimum) — Its unique texture and structure add visual interest from summer to early fall; perennial for full
Sea Holly (Eryngium Maritimum) — topped with cone-shaped flower heads surrounded by a ruff of spiny bracts; a resilient coastal plant, image 66
Sea Holly (Eryngium Maritimum) — perennial for full; with its bold form and captivating color, image 100
Sea Holly (Eryngium Maritimum) — Sea Holly, or Eryngium maritimum, is a striking perennial suitable for coastal themes; its unique texture and, image 51
Sea Holly (Eryngium Maritimum) — tolerating harsh seaside conditions and poor
Sea Holly (Eryngium Maritimum) — A resilient coastal plant
Sea Holly (Eryngium Maritimum) — topped with cone-shaped flower heads surrounded by a ruff of spiny bracts; a resilient coastal plant, image 116
Sea Holly (Eryngium Maritimum) — This tough plant thrives in full sun, in well-drained soil, and tolerates drought and poor soils; peaking at, image 53
Sea Holly (Eryngium Maritimum) — These distinctive flowers
Sea Holly (Eryngium Maritimum) — peaking at approximately 1 to 2 inches in diameter; blue flowers in the garden, image 68
Sea Holly (Eryngium Maritimum) — scientifically known as Eryngium maritimum; silvery-green foliage forms a low rosette
Sea Holly (Eryngium Maritimum) — branched stems rise in summer; it boasts silvery-blue, thistle-like blooms atop 2-3 feet stems, with a spread of, image 90
Sea Holly (Eryngium Maritimum) — is a striking perennial valued for its thistle-like blooms; minimal maintenance is required, though it may benefit from
Sea Holly (Eryngium Maritimum) — which add a unique texture and a touch of steel blue to the landscape; this tough plant thrives in full sun, in, image 83
Sea Holly (Eryngium Maritimum) — silvery-green foliage forms a low rosette; with a tolerant attitude toward drought once established, image 114
Sea Holly (Eryngium Maritimum) — tolerating harsh seaside conditions and poor; perennial with blue blooms, image 61
Sea Holly (Eryngium Maritimum) — attracting pollinators while deterring deer
Sea Holly (Eryngium Maritimum) — which add a unique texture and a touch of steel blue to the landscape; this tough plant thrives in full sun, in well-drained
Sea Holly (Eryngium Maritimum) — branched stems rise in summer; it boasts silvery-blue, thistle-like blooms atop 2-3 feet stems, with a spread of, image 115
Sea Holly (Eryngium Maritimum) — which add a unique texture and a touch of steel blue to the landscape; this tough plant thrives in full sun, in, image 58
Sea Holly (Eryngium Maritimum) — is a striking perennial valued for its thistle-like blooms
Sea Holly (Eryngium Maritimum) — with a tolerant attitude toward drought once established; this robust species typically reaches a height of 18 to, image 70
Sea Holly (Eryngium Maritimum) — A resilient coastal plant; it thrives in USDA hardiness zones 5 through 9, image 109
Photographs by 16 contributors

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