Blue Star Sea Holly

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Shipping begins the week of March 16th, 2020 Learn More…
$25.98 Sale $12.99
Per Bag of 3
You save: 50%
In stock
SKU
AM014457
'Blue Star' Sea Holly has unique, electric-blue flowers with feathered petals that surround erect, thimble-like center cones. Delivering loads of exotic texture and color to the garden througout the summer season, the blooms can be cut and enjoyed in arrangements, both fresh and dried. Deer resistant and tolerant of poor, sandy soils. (Erynigium alpinum)
Zones 5 - 8
Advantages
Deer Resistant
Rabbit Resistant
Good For Cut Flowers
Good For Dried Flowers
Good Rockgarden Or Alpine Plant
Light Requirements
Full Sun
Mature Plant Size30-36" tall , 12-18" wide
Bloom TimeEarly to late summer
SizeBag of 3
SKUAM014457

USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

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Plant Information

Here's a fascinating plant, new to us this year. But hardly new. Most Sea Hollies grow along the Mediterranean coast as striking blue wildflowers, and they have been admired for centures. Even Plutarch wrote about this plant in ancient Rome! One of the species also grows in the Alps, and that one is Erynigium alpinum, or Alpine Sea Holly. Our selection is from that species, and said to be one of the bluest of them all.

The great British gardener of the Edwardian period, William Robinson, the first plant expert who was seriously interested in wildflowers, said Sea Holly was his all-time favorite. Stunned by the blue coloring, rare in flowers, he wrote that Sea Holly was not surpassed in beauty by any plant! Quite an endorsement.

For good growth, Sea Holly requires full sun and a gritty, fast-draining soil, so site yours carefully. The flowers arise in mid-summer from plants about 30 tall, and by the way, both the leaves and roots are edible.

More Information
SKUAM014457
Item Package Size
Bag of 3
Common Name
Blue Star Sea Holly
Botanical Name
Eryngium alpinum Blue Star
Zones
5, 6, 7, 8
Light Requirements
Full Sun
Flower Color
Blue
Flower Size
1-2" flowers
Mature Height
30-36" tall
Estimated Mature Spread
12-18" wide
Growth Rate
Medium
Bloom Time
Early to late summer
Planting Depth
Plant so that the top of the root is 1" below the soil line.
Ships As
Bare Root
Foliage
Lacy dark blue and green thistle-like foliage.
Soil Type
Sandy Soil, Loamy Soil, Drought/Dry Soil
Soil Moisture
Dry, Average, Well Draining
Tolerates
Dry Sites
Advantages
Deer Resistant, Rabbit Resistant, Good For Cut Flowers, Good For Dried Flowers, Good Rockgarden Or Alpine Plant
Ideal Region
Northeast, Southeast, Midwest, West, Southwest, Pacific Northwest
Planting Time
Spring / Summer
Ships to Hawaii, Alaska & Canada
No
Shipping
ZoneShipping Status
Zone 2Shipping begins the week of May 11th, 2020
Zone 3Shipping begins the week of May 11th, 2020
Zone 4Shipping begins the week of May 11th, 2020
Zone 5Shipping begins the week of April 27th, 2020
Zone 6Shipping begins the week of April 13th, 2020
Zone 7Shipping begins the week of March 30th, 2020
Zone 8Shipping begins the week of March 23rd, 2020
Zone 9Shipping begins the week of March 16th, 2020
Zone 10Shipping begins the week of March 16th, 2020

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and spring-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and spring-planted bulbs are shipped at the proper planting time for your hardiness zone. Perennial and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

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