} Sea Holly Blue flowers seed (Eryngium Planum) perennial

Sea Holly Blue flowers seed (Eryngium Planum) perennial

$ 2.95
SKU P16885S

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 - 9
  • Height: 28 inches
  • Bloom Season: Summer to fall
  • Bloom Color: Blue
  • Environment: Full sun to partial shade
  • Soil Type: Well-drained soils, pH 6.8 - 7.2

Planting Directions

Temperature: 64 to 72F for the first 2-4 weeks. After this period, the sowing must be kept at a cold temperature between 25 and 39F for another 4 - 6 weeks

  • Average Germ Time: 28 - 56 days
  • Light Required: No
  • Depth: Surface sow seed and press tightly in to soil
  • Sowing Rate: 4 - 5 seeds per plant
  • Moisture: Keep seeds moist until germination
  • Plant Spacing: 24 inches

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