Plant FinderPlant Finder Graphic
Eryngium amethystinum
Eryngium amethystinum

Click to Enlarge

Zone
Zones 1-24, 26, 28-45
Full Sun
Full
Minimal Water
Minimal

Eryngium amethystinum

Sea Holly
Apiaceae (Umbelliferae)
Perennials, Flowers

ERYNGIUM

Mostly spiny-leafed, rosette-forming plants that produce erect, thistlelike, leafy stalks bearing tight, silvery or blue-tinted flower heads surrounded by showy bracts. Bloom in summer (sometimes into fall). Upper leaves, leafstalks, bracts, and flowers may all be frosted with silver or tinted in shades of blue or amethyst.

Sea hollies from dry, rocky areas in Europe, North Africa, Turkey, central Asia, China, and Korea tend to be taprooted; they prefer dry well-drained, poor to moderately rich soils; need protection from excessive winter water. Those from wet grasslands in Mexico, Brazil, and Argentina have fibrous root systems and prefer moist, well-drained soils. Taprooted forms are difficult to divide but may be propagated by root cuttings. If seeding, sow in place. Some species reseed vigorously. Watch out for snails and slugs.

Useful in rock gardens and for long displays in borders. Good choice for dried arrangements.

Eryngium amethystinum

From Italy and the Balkans. To 2 1/2 ft. high and 1 1/2 ft. wide, with taproot. Spiny, medium green leaves to 6 in. long. Silvery blue stems and conical, 1-in. amethyst flower heads surrounded by 2-in., silvery blue bracts.

You Might Also Like...

Gaillardia x grandiflora ‘Arizona Sun’

Compact, uniform plant grows to about 10 in. tall and 12 in. wide and is loaded with large flowers. Ea...

Juniperus procumbens ‘Nana’

Grows to 1 ft. tall and 6 ft. wide, with curved branches that radiate in all directions. Shorter needl...

Xeranthemum annuum

Mediterranean native to 2 1/2 ft. tall and 1/2 ft. wide. Bears so-called everlasting flowers, with dai...

Find Your Sunset Climate Zone

Find Your Sunset Climate Zone

View Maps Learn More

Advertisement