Sea Holly Blue (Eryngium Planum) - Unique and stately, Eryngium Planum, commonly called Sea Holly, has been grown from flower seeds in America since the 1800's. It can be propagated by division, flower seed and root cuttings. Almost all Eryngium make excellent cut flowers as well as flowers used for drying. The flowers keep their beautiful blue color after drying indoors. Harvest flowers when the entire flower heads and bracts turn blue.
Eryngium Sea Holly self-sows readily by dropping its flower seeds on the ground, but it is not invasive. If the Sea Holly seeds are started indoors, transplant the seedlings where you want them to grow when they are quite small. The Eryngium plants have taproots, so they won't transplant well once mature. Sea Holly plants attract bees and butterflies, and they are a great plant for a low water garden. Eryngium seeds can be started directly outside in the spring after frost season has passed.

Season: Perennial
USDA Zones: 4 - 8
Height: 48 inches
Bloom Season: Early summer to late summer
Bloom Color: Blue
Environment: Full sun

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