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Blue Sea Holly

Q&A
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  • Sun Exposure: Full Sun
  • Height/Habit: 24 - 30 inches
  • Zone: 4-10
  • Flowering Date: Summer.
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We ship this item in Spring

Blue Sea Holly

Description
Unique, thistle-like, steely-blue flowers with pincushion centers. Extremely long-lasting and can be used as cut or dried flowers. Unique foliage complements lacy flowers.

We have assembled some of our best selling Perennials that butterflies love and have put them in this assortment below. All of the varieties on this page attract butterflies. You can buy the complete garden or the individual item that fits your need. You will find plants in all sizes and colors.

Specifications
Light: Full sun to partial shade
Height: 18-36"
Bloom Time: Early Summer-Early Fall
Size: No. 1 size roots
Zone: 4 to 7
Product Details
  • Season Spring
  • Unit of Measure1
  • Botanical NameEryngium alpinum
  • Sun ExposureFull Sun
  • State RestrictionsAE AK GU HI PR
  • Spread18 - 24 inches
  • Spacing18 - 22 inches
  • Hardiness Zone4-10
  • Flowering DateSummer.
  • Planting InstructionsDig a hole large enough to accommodate the roots without bending them. Plant just below soil, 24 iches apart. Plant firmly and water in thoroughly. If potted, plant same depth as in pot.
  • Winter CareProtect from excessive winter moisture (standing water).
  • Flower Color:blue
  • Flower FormThe 1 1/2" pineapple-like heads are subtended by several ruffs of delicate, pinnetely cut, steel blue bracts.
  • Foliage TypeLower leaves heart-shaped, up to 6" long with margins covered in spiny teeth. Stem leaves palmately lobed, tinged with blue.
  • Soil RequirementWell drained, open soil
  • PruningNone, except to cut back spent flower stems After flowering
  • Additional InformationThis has an extended bloom time as the side branches produce abundant, albeit smaller flowers. These, along with the terminal flower forms an open, broad conical flowering head.
  • Unique CharactersticsFronds are shaped like tail feathers of a bird. Nice, rich green accent for a shaded garden or background to other low growing shade perennials. Add some fronds to a cut flower arrangement for a rich green accent.
  • ShippedNO. 1 BAREROOT
  • Height/Habit24 - 30 inches
  • Growth RateModerate once established, which takes approximately 4 - 6 weeks
Shipping Information

When will my order ship?

Plants will be shipped at the proper planting time for your area of the country during the shipping timeframes outlined below:

2018 Spring Shipping Schedule
Zone Perennials & Potted Plants
1A-4B 5/7/18 - 6/22/18
5A 4/2/18 - 6/22/18
5B 3/19/18 - 6/22/18
6A 3/12/18 - 6/22/18
6B 3/5/18 - 6/22/18
7A & 7B 2/26/18 - 6/22/18
8A & 8B 2/19/18 - 5/18/18
9A - 10B 2/12/18 - 5/18/18
Last Order Date Zones 1-7: June 18th, 2018
Zones 8-10: May 14th, 2018

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