Blaukappe Sea Holly

Blaukappe Sea Holly (Eryngium planum 'Blaukappe')

Blaukappe Sea Holly (Eryngium planum 'Blaukappe'), also known as Blue Cap Sea Holly, is a compact, drought-tolerant perennial featuring small, globe-shaped, steely blue flowers surrounded by spiky bracts. Blooming from mid to late summer, this variety provides bold texture and long-lasting color in rock gardens, pollinator landscapes, and low-maintenance borders.

Distinctive Features

Blaukappe Sea Holly is prized for its silvery-blue stems and flower heads, which develop a deeper hue as the season progresses. Its finely dissected, spiny foliage adds contrast to garden beds, and its stiff, upright habit creates a bold, sculptural presence. The blooms are excellent for fresh and dried floral arrangements.

Growing Conditions

• Sun Exposure: Prefers full sun.
• Soil: Requires well-drained, sandy or gravelly soil.
• Water: Drought-tolerant once established; avoid excessive moisture.
• USDA Hardiness Zones: 4-9, making it adaptable to a variety of climates.

Ideal Uses

• Rock Gardens: Thrives in dry, well-draining soils.
• Pollinator Gardens: Nectar-rich flowers attract bees and butterflies.
• Cut Flower Gardens: Prized for long-lasting blooms in fresh and dried arrangements.
• Drought-Tolerant Landscapes: Flourishes in low-water settings.
• Focal Points: Creates a striking, architectural element in borders.

Low Maintenance Care

Blaukappe Sea Holly is a hardy, drought-tolerant perennial that thrives in hot, dry conditions and requires minimal care once established.

• Watering: Prefers dry conditions; avoid overwatering.
• Pruning: Cut back spent flowers to encourage additional blooming.
• Fertilizing: Minimal feeding required; thrives in lean soils.
• Deer and Rabbit Resistance: Prickly texture deters browsing animals.
• Winter Care: Leave stems intact for winter interest or cut back in late fall.

Why Choose Blaukappe Sea Holly?

Blaukappe Sea Holly is a compact, drought-resistant perennial that provides long-lasting blooms, unique texture, and pollinator benefits.

• Vibrant Steely-Blue Blooms: Adds a striking contrast to garden beds.
• Drought-Tolerant: Thrives in dry, well-drained soils.
• Attracts Pollinators: Supports bees and butterflies with nectar-rich flowers.
• Unique Architectural Texture: Adds sculptural interest to landscapes.

For a hardy, low-maintenance perennial that delivers bold texture and pollinator appeal, Blaukappe Sea Holly (Eryngium planum 'Blaukappe') is an outstanding choice.