Sea Holly

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Some common names for Sea Holly are Miss Wilmott’s Ghost, rattlesnake master, and button snakeroot.  The genus of the Sea Holly is Eryngium, and it is mostly native to Europe and the Mediterranean coastline.  There are several species of Eryngium that have been cultivated for the gardener.  It looks like a ‘Plume Thistle’ since the flower is burr-shaped, but the flowers are blue rather than mauve. 


All that is required for this low-maintenance plant is a full day of sun and good drainage; prefers sandy soil.  Finding a showy flower to grow in the sunbaked parts of the landscape, street, or along the driveway, is a challenge.  Sea Holly plants will reward you with their blue flowers and will definitely add color to your problem areas.  Their spiny-toothed leaves and clusters of blossoms provide a unique interest.

Deadheading is recommended and encourages extra blooms.  Cut the flowers in late fall, but leave the evergreen leaves on the stalks for the winter.  Since Sea Holly plants have a long taproot they are excellent for erosion control.  Also the taproot allows them to tolerate drought, winds, salt sprays and sandy soils!  Ornamental grasses, daylilies, and yarrow are outstanding companions for Sea Holly.

FAQS for Buying Sea Holly Online

What is Sea Holly and why is it a popular drought-tolerant plant?

Sea Holly, also known as Eryngium or Miss Wilmott’s Ghost, is a striking perennial admired for its spiny, blue, thistle-like flowers and ability to thrive in poor, dry, and sandy soils. Gardeners love its low-maintenance needs and bold structure, especially in sunbaked landscapes.

Where should I plant Sea Holly in my garden for best results?

Plant Sea Holly in full sun and well-drained, sandy soil to ensure healthy growth and vibrant color. It performs exceptionally well in challenging locations like driveways, coastal areas, and street-side borders where other plants may struggle.

Is Sea Holly good for erosion control and difficult landscapes?

Yes, Sea Holly develops a long taproot that makes it ideal for erosion control on slopes and in windy, dry environments. It’s salt-tolerant and wind-resistant, making it perfect for coastal gardens or tough-to-plant areas.

Do Sea Holly flowers attract pollinators or wildlife?

Absolutely—Sea Holly is a favorite among bees, butterflies, and other beneficial pollinators. Its long-lasting, nectar-rich blooms offer vital support for pollinator populations while adding striking texture and color to your garden.

How do I care for Sea Holly to encourage more blooms?

Sea Holly requires minimal care—just full sun and well-drained soil. Deadhead spent blooms to encourage additional flowering, and leave the evergreen foliage intact through winter for added interest and cold protection.

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