Eryngium, Sea Holly 'Blue Hobbit'

Eryngiumplanum

Family
Apiaceae (ay-pee-AY-see-ee)
Genus
Eryngium (er-RIN-jee-um)
Species
planum (PLAN-um)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
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)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Dark Blue
Silver/Gray
Bloom Time
Mid Summer
Other Details
Category
Perennials
Water Requirements
Foliage Color
Bronze
Where to Grow
Can be grown as an annual
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Propagation Methods
From seed; sow indoors before last frost
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Palmer, Alaska

Atlanta, Georgia

Cherry Valley, Illinois

Baxter, Minnesota

Isle, Minnesota

Fargo, North Dakota

Doylestown, Ohio

New Hope, Pennsylvania

Knoxville, Tennessee

Lake Stevens, Washington

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Gardener's Notes:

1
positive
0
neutral
0
negative
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J
Palmer, AK (Zone 3b) | September 2010 | positive

Great plant. Seed germinates at 40F. Plant bloomed 1st year from seed sown in December and stratified, pulled to room temp in February. H...Read More

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