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Blue Cap Sea Holly (Eryngium Planum 'Blaukappe') - 1 Gallon Pot

Blue Cap Sea Holly (Eryngium Planum 'Blaukappe') - 1 Gallon Pot - Image 2

Blue Cap Sea Holly (Eryngium Planum 'Blaukappe') - 1 Gallon Pot - Image 3

Blue Cap Sea Holly (Eryngium Planum 'Blaukappe') - 1 Gallon Pot - Image 4

Blue Cap Sea Holly (Eryngium Planum 'Blaukappe') - 1 Gallon Pot - Image 5

Blue Cap Sea Holly (Eryngium Planum 'Blaukappe') - 1 Gallon Pot - Image 6

Blue Cap Sea Holly (Eryngium Planum 'Blaukappe') - 1 Gallon Pot -Herbers Zone 4a 8b 23

Blue Cap Sea Holly (Eryngium Planum ‘Blaukappe’) – 1 Gallon Pot

Original price was: $28.85.Current price is: $20.20.

SKU: D2LSC 6372234013 Category: PERENNIAL PLANTS

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Description
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Blue Cap Sea Holly

Eryngium planum ‘Blaukappe’

Other Names: Blue Eryngo, Blue Sea Holly, Flat Sea Holly, Sea Star Thistle, Star Thistle

Plant Details

USDA Plant Hardiness Zones: 4a-8b Find Your Zone

Plant Type: Flowering Perennial

Height at Maturity: 24-36″

Width at Maturity: 18-24″

Spacing: 18″ for mass plantings; 42″ or more for space between plants

Growth Habit / Form: Upright

Growth Rate: Moderate

Flower Color: Blue

Flower Size: Small 1″

Flowering Period: All Summer

Flower Type: Thistle-like

Fragrant Flowers: No

Foliage Color: Silver Grey

Fragrant Foliage: No

Berries: No

Berry Color: NA

Sun Needs: Full Sun or Mostly Sun

Water Needs: Average to Low when established

Soil Type: Clay (Amend to ensure very good, sharp drainage),Sandy, Silty

Soil Moisture / Drainage: Dry to Lightly Damp

Soil pH: 6.5 – 7.5 (Acid to Slightly Alkaline)

Maintenance / Care: Very Low

Attracts: Visual Attention

Resistances: Cold Temperatures (-30F / Zone 4a), Deer, Disease, Drought, Dry Soil, Insect

Description

Eryngium planum are the hardiest and most long-lived of all Sea Holly species. Eryingium planum ‘Blaukappe, commonly called ‘Blue Cap’, is a taller growing cultivar to 3 feet in height featuring abundant electric-blue flowerheads throughout the summer. The thistle-like flowers are made up of tiny flowers packed together in an egg-shaped dome that sits atop a collar of narrow powder-blue bracts. A favorite of florists, the long-lasting flowers are excellent for cutting and use in fresh or dried floral arrangements. Also a favorite of butterflies and beneficial pollinators, but deer and rabbits turn their nose up. A colorful and textural compliment to any garden or container, Blue Cap makes for a striking addition to dry and sunny perennial borders and rock gardens where the soil is very well-drained. This plant does not like wet feet so is perfect for planting in those areas that tend to stay dry, especially during winter.

Landscape & Garden Uses

Growing 3 feet tall by 2 feet wide, the Blue Cap Sea Holly is ideal for use as a colorful accent in smaller garden spaces and containers or in groupings in larger perennial borders, rock gardens and anywhere else the sun shines and the soil is well-drained. Looks very nice and fits in perfectly around stones and boulders. A fine addition to perennial gardens, rock gardens, pollinator gardens, meadow gardens, blue theme gardens and the Xeriscape (low water needs).

Suggested Spacing: 18 inches for a solid border; 42 inches or more apart for space between plants

Growing Preferences

Blue Cap Sea Holly is easy to grow in a well-drained soil of average to low fertility, preferring sandy or gravely soil that ensure good drainage, especially during winter. It doesn’t perform well in overly rich or wet soils. It prefers full to mostly sun. We suggest at least 6 hours of direct sunlight per day. No maintenance required except to remove spent flower stalks if desired, which can be used in dried floral arrangements. Highly drought tolerant when established.

Plant Long & Prosper!

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