Sea Holly
Eryngium planum 'Blue Hobbit'

Family: Apiaceae (ay-pee-AY-see-ee) (Info)
Genus: Eryngium (er-RIN-jee-um) (Info)
Species: planum (PLAN-um) (Info)
Cultivar: Blue Hobbit
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Category:

Perennials

Height:

12-18 in. (30-45 cm)

Spacing:

15-18 in. (38-45 cm)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:

Medium Blue

Silver/Gray

Bloom Time:

Mid Summer

Foliage:

Herbaceous

Silver/Gray

Other details:

Suitable for growing in containers

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; sow indoors before last frost

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Palmer, Alaska

Cherry Valley, Illinois

Baxter, Minnesota

Isle, Minnesota

Fargo, North Dakota

Doylestown, Ohio

New Hope, Pennsylvania

Knoxville, Tennessee

Lake Stevens, Washington

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Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Sep 17, 2010, jrtinker from Palmer, AK (Zone 3b) wrote:

Great plant. Seed germinates at 40F. Plant bloomed 1st year from seed sown in December and stratified, pulled to room temp in February. Has survived 4 Alaskan winters so far.