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Blue Or False Sea Holly

Eryngium Planum

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Overview

Eryngium planum, commonly known as Blue Sea Holly, is a striking perennial bearing a unique metallic blue hue. Ideal for zones 4-9, it reaches 2 to 3 feet in height and spans 1 to 1.5 feet wide. This drought-tolerant plant thrives in full sun and well-drained soil, producing thistle-like blooms from mid to late summer. Its texture and color add distinct contrast to any garden composition.

Sun FullWater LowZones 2–9Type PerennialClimate Temperate
Blue Or False Sea Holly (Eryngium Planum) — This drought-tolerant plant thrives in full sun and well-drained soil; including bees and butterflies
Blue Or False Sea Holly (Eryngium Planum) — or as a striking focal pointBlue Or False Sea Holly (Eryngium Planum) — which are surrounded by spikyBlue Or False Sea Holly (Eryngium Planum) — intense blue to violet flowers; it prefers full sun exposure and flourishes in well-drained soil, image 57Blue Or False Sea Holly (Eryngium Planum) — Eryngium planum, commonly known as Blue Sea Holly, is a striking perennial bearing a unique metallic blue hueBlue Or False Sea Holly (Eryngium Planum) — intense blue to violet flowers; it prefers full sun exposure and flourishes in well-drained soilBlue Or False Sea Holly (Eryngium Planum) — so selecting the right location initially is important.<br><br>Blooming occurs from early to late summer, image 40+78

Culture

Sun
Full
Water
Low
USDA zones
2–9

Shape & size

Mature height
2–3 Ft.
Mature width
1–2 Ft.

Classification

Type
Perennial
Family
Apiaceae (Umbelliferae)
Climate
Temperate

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Photos (85)

Blue Or False Sea Holly (Eryngium Planum) — This drought-tolerant plant thrives in full sun and well-drained soil; including bees and butterflies
Blue Or False Sea Holly (Eryngium Planum) — or as a striking focal point
Blue Or False Sea Holly (Eryngium Planum) — which are surrounded by spiky
Blue Or False Sea Holly (Eryngium Planum) — intense blue to violet flowers; it prefers full sun exposure and flourishes in well-drained soil, image 57
Blue Or False Sea Holly (Eryngium Planum) — Eryngium planum, commonly known as Blue Sea Holly, is a striking perennial bearing a unique metallic blue hue
Blue Or False Sea Holly (Eryngium Planum) — intense blue to violet flowers; it prefers full sun exposure and flourishes in well-drained soil
Blue Or False Sea Holly (Eryngium Planum) — so selecting the right location initially is important.<br><br>Blooming occurs from early to late summer, image 40
Blue Or False Sea Holly (Eryngium Planum) — blue flowers in the garden; is a striking perennial that offers a unique texture and color to any landscape design
Blue Or False Sea Holly (Eryngium Planum) — Its texture and color add distinct contrast to any garden composition
Blue Or False Sea Holly (Eryngium Planum) — tolerating drought conditions once established
Blue Or False Sea Holly (Eryngium Planum) — thriving in USDA Hardiness Zones 5 to 9; ideal for zones 4-9, it reaches 2 to 3 feet in height and, image 59
Blue Or False Sea Holly (Eryngium Planum) — This drought-tolerant plant thrives in full sun and well-drained soil
Blue Or False Sea Holly (Eryngium Planum) — Eryngium planum offers architectural interest and a metallic shimmer
Blue Or False Sea Holly (Eryngium Planum) — is a striking perennial that offers a unique texture and color to any landscape design; blue flowers in, image 55
Blue Or False Sea Holly (Eryngium Planum) — This hardy plant is characterized by its thistle-like; its texture and color add distinct contrast to any garden
Blue Or False Sea Holly (Eryngium Planum) — Ideal for zones 4-9, it reaches 2 to 3 feet in height and spans 1 to 1.5 feet wide; thriving in USDA, image 50
Blue Or False Sea Holly (Eryngium Planum) — which are surrounded by spiky; while its spiny foliage deters deer, image 58
Blue Or False Sea Holly (Eryngium Planum) — so selecting the right location initially is important.<br><br>Blooming occurs from early to late summer
Blue Or False Sea Holly (Eryngium Planum) — including bees and butterflies
Blue Or False Sea Holly (Eryngium Planum) — tolerating drought conditions once established; so selecting the right location initially is
Blue Or False Sea Holly (Eryngium Planum) — The plant's deep taproot system can make it resilient but also challenging to transplant, image 63
Blue Or False Sea Holly (Eryngium Planum) — and its nectar-rich flowers attract a plethora of pollinators
Blue Or False Sea Holly (Eryngium Planum) — This hardy plant is characterized by its thistle-like; its texture and color add distinct contrast to, image 56
Blue Or False Sea Holly (Eryngium Planum) — It prefers full sun exposure and flourishes in well-drained soil; intense blue to violet flowers, image 60
Photographs by 8 contributors

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