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Out of Season Blue Star Sea Holly

Blue Star Sea Holly

European Mountain Flower

Really fascinating color and form! Egg-shaped sea blue blossoms grow 24-30 in. tall. Dries beautifully for unique bouquets. Prefers full sun to partial shade. Bareroot.
  • Zone 4 - 8 (-20° F.)
  • Height 18 - 30 inches.
  • Shade Required Full sun. Tolerates light shade.

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Product Details

  • Botanical Name: Eryngium alpinum 'Blue Star'; Family: Apiaceae (Carrot Family)
  • Height: 18 - 30 inches.
  • Spacing: 24 inches.
  • Depth: Plant crown 1 inch below soil surface.
  • Spread: 24 inches.
  • Sun/Shade: Full sun. Tolerates light shade.
  • Color: Deep blue blossoms.
  • Foliage: Blue stem and bluish spiny leaves.
  • Blooms: Summer
  • Form: Herbaceous perennial. Upright
  • Flower Form: Egg-shaped blue flower heads.
  • Soil Requirements: Average, medium wet, well-drained soil. Tolerates poor soils, drought and saline conditions once established.
  • Growth Rate: Medium growth rate.
  • Size: 2 inches.
  • Comments: This sea holly is thistle-like in appearance and will grow up to 30 inches tall on stiff, blue stems. Egg-shaped, metallic-blue flower heads (2 inches long) are surrounded by a collar of 12 - 18 inches, attractive, somewhat soft-to-the-touch, finely-divided, blue-gray bracts which extend outward from the base of each flower head. All foliage has a bluish tinge with lower leaves being heart-shaped and spiny-toothed and upper leaves being palmately-divided. A long-lasting cut flower that also dries well.

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