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Eryngium giganteum (Miss Willmott’s Ghost)

Miss Willmott's Ghost, Giant Sea Holly, Tall Eryngo, Eryngium oliverianum 'Willmott's Ghost'

AGM Award
Eryngium Giganteum', Miss Willmott's Ghost, Giant Sea Holly, Tall Eryngo, Eryngium Oliverianum 'Willmott's Ghost', Dry soils plants, Blue flowers, silver perennials
Eryngium Giganteum', Miss Willmott's Ghost, Giant Sea Holly, Tall Eryngo, Eryngium Oliverianum 'Willmott's Ghost', Dry soils plants, Blue flowers, silver perennials
Eryngium Giganteum', Miss Willmott's Ghost, Giant Sea Holly, Tall Eryngo, Eryngium Oliverianum 'Willmott's Ghost', Dry soils plants, Blue flowers, silver perennials

With its luminous spiny collar of silvery-white bracts surrounding an egg-shaped flower head and tightly packed with flowers, initially pale green, then changing to steel-blue, Miss Willmott’s Ghost (Eryngium giganteum) is quite a catch and an asset to any garden! Rising atop a basal rosette of heart-shaped green leaves, this short-lived perennial or biennial self-sows generously and remains in the garden year after year for our utmost pleasure. Easy to grow, low care, pest and trouble-free, Miss Willmott’s Ghost lights up the garden throughout summer. Its beautiful texture and unique color, coupled with its long-lasting flowering make it a favorite of gardeners! Bees, butterflies and beneficial pollinating insects love it too, while deer and rabbit tend to dislike it.

  • Growing in clumps of stiffly erect, branched stems up to 3-4 ft. tall (90-120 cm), this short-lived perennial prefers full sun locations and enjoys dry, well-drained soils. Tolerates poor soils. Avoid planting this plant in moist and fertile soils, where it will tend to sprawl and may require support. Drought tolerant
  • Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society
  • Excellent choice for beds and borders or naturalistic plantings, where the steel blue flowers and silvery foliage will superbly complement the vibrantly colored summer flowers. Perfect for coastal gardens, cottage or city gardens.
  • Deadhead spent flowers to prevent undesired self-seeding.
  • Transplants poorly and is best left undisturbed once established.
  • This plant was named after Ellen Willmott, an eccentric English gardener who loved it so much that she secretly dropped seeds in the gardens she visited without telling anyone and the plants would mysteriously appear later

Learn How To Plant, Care, and Grow Spectacular Sea Holly (Eryngium)


Attractive, Sea Holly plants (Eryngium) are striking ornamental perennials grown for their arresting, thistle-like, silvery or blue tinted flower heads adorned with a ruff of showy bracts. Blooming in summer and sometimes into fall, they are exceptionally care-free plants if they are given a well-chosen site. Here are some basic rules that need to be followed to enjoy their splendid flowers.

Requirements

Hardiness 4 - 9
Heat Zones 1 - 11
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1
Plant Type Perennials
Plant Family Apiaceae
Genus Eryngium
Common names Sea Holly
Exposure Full Sun
Season of Interest Summer (Early, Mid, Late)
Height 3' - 4'
(90cm - 120cm)
Spread 2' - 3'
(60cm - 90cm)
Spacing 24" - 36"
(60cm - 90cm)
Maintenance Low
Water Needs Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Plant of Merit, Showy
Tolerance Drought, Deer, Rabbit, Dry Soil
Attracts Bees, Butterflies
Garden Uses Beds And Borders
Garden Styles Prairie and Meadow, Informal and Cottage, Gravel and Rock Garden, Coastal Garden, City and Courtyard
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Alternative Plants to Consider

Eryngium leavenworthii (False Purple Thistle)
Eryngium x oliverianum (Oliver Sea Holly)
Eryngium planum ‘Blue Cap’ (Flat Sea Holly)
Eryngium alpinum (Alpine Sea Holly)
Eryngium alpinum ‘Blue Star’ (Alpine Sea Holly)
Eryngium pandanifolium (Giant Sea Holly)

Recommended Companion Plants

Papaver orientale ‘Prinzessin Victoria Louise’ (Oriental Poppy)
Achillea millefolium ‘Cerise Queen’ (Yarrow)
Rudbeckia triloba (Brown-Eyed Susan)
Sedum ‘Matrona’ (Stonecrop)
Echinacea purpurea ‘Rubinglow’ (Coneflower)
Salvia nemorosa ‘Caradonna’ (Sage)
Lychnis coronaria (Rose Campion)
Allium sphaerocephalon (Drumstick Allium)
Perovskia atriplicifolia (Russian Sage)

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A Pretty Perennial Planting Idea with Echinops, Eryngium and Sedum
An Easy Perennial Planting Idea with Echinops, Eryngium and Perovskia
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Eryngium (Sea Holly)
Eryngium bourgatii (Mediterranean Sea Holly)
Eryngium planum (Flat Sea Holly)
Learn How To Plant, Care, and Grow Spectacular Sea Holly (Eryngium)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 4 - 9
Heat Zones 1 - 11
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1
Plant Type Perennials
Plant Family Apiaceae
Genus Eryngium
Common names Sea Holly
Exposure Full Sun
Season of Interest Summer (Early, Mid, Late)
Height 3' - 4'
(90cm - 120cm)
Spread 2' - 3'
(60cm - 90cm)
Spacing 24" - 36"
(60cm - 90cm)
Maintenance Low
Water Needs Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Plant of Merit, Showy
Tolerance Drought, Deer, Rabbit, Dry Soil
Attracts Bees, Butterflies
Garden Uses Beds And Borders
Garden Styles Prairie and Meadow, Informal and Cottage, Gravel and Rock Garden, Coastal Garden, City and Courtyard
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Eryngium (Sea Holly)
Not sure which Eryngium (Sea Holly) to pick?
Compare Now

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    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

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