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Eryngium Hybrid, Sea Holly

Eryngiumx tripartitum

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Eryngium x tripartitum by frompfj
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Family
Apiaceae (ay-pee-AY-see-ee)
Info
Genus
Eryngium (er-RIN-jee-um)
Info
Synonym
Eryngium tripartitum
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Spacing
12-15 in. (30-38 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)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Light Blue
Silver/Gray
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Alpines and Rock Gardens
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Bronze
Where to Grow

Unknown - Tell us

Bloom Characteristics

Unknown - Tell us

Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information

Unknown - Tell us

Propagation Methods
By dividing the rootball
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

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

Lincoln, (258 reports)

Richmond, California

San Jose, California

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4 members have or want this plant for trade

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Gardener's Notes:

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scott415
San Jose, CA | June 2012 | positive

I have grown this plant from seed I collected. I'd rate it pretty easy to grow.

R
R
RiseAnn
Rapid City, SD (Zone 5b) | August 2001 | neutral

This plant prefers full sun and moderately fertile, free draining soil. Flowers consist of small round metallic-blue heads surrounded by...Read More

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