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PlantFiles: Alpine Eryngo, Alpine Sea Holly
Eryngium alpinum 'Superbum'

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Family: Apiaceae (ay-pee-AY-see-ee) (Info)
Genus: Eryngium (er-RIN-jee-um) (Info)
Species: alpinum (AL-pin-um) (Info)
Cultivar: Superbum

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One member has or wants this plant for trade.

Category:
Perennials

Height:
24-36 in. (60-90 cm)

Spacing:
15-18 in. (38-45 cm)

Hardiness:
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)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Medium Blue

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Silver/Gray
Blue-Green

Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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to view:

By gringo
Thumbnail #1 of Eryngium alpinum by gringo

By Sunblest5
Thumbnail #2 of Eryngium alpinum by Sunblest5

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral lmelling On Jan 24, 2005, lmelling from Ithaca, NY (Zone 5b) wrote:

Is said to be more vigorous than the species.

Regional...

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

Monterey, California
Hampton, Virginia



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