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Key characteristics

Family: Apiaceae
Height: 28 to 36 inches
Width: 18 to 24 inches
Flower color: Intense, iridescent metallic blue
Foliage color: Dark green, spiny-toothed basal leaves
Bloom time: Mid-summer, often lasting into autumn
Light: Full sun
Water: Low
Maintenance: Low; requires minimal care but benefits from protection against winter wet
Growing zone: USDA zones 5a to 9b
Wildlife: Attracts bees and butterflies; deer and rabbit resistant

Perennials

Eryngium × zabelii 'Jos Eijking'

Jos Eijking Sea Holly

Eryngium × zabelii 'Jos Eijking' is a perennial known for its unique architectural presence and vibrant color. During the blooming season from mid to late summer, it produces numerous cone-shaped flower heads in a bright metallic blue color. These blooms are made of tightly packed florets surrounded by a collar of spiny bracts, creating a distinctive texture that adds interest to garden landscapes.

The plant's sturdy, angular stems share the same intense blue coloration, extending the visual appeal beyond the flowers themselves.

Light

Full sun

Water

Low

Bloom time

Mid-summer, often lasting into autumn

Find this plant

Works well in

Borders
Sun Gardens
Pollinator Gardens
Waterwise Gardens
Cut Flower Gardens

Companion plants

Asters · Catmint · Coreopsis · Bearded irises · Bee balm · Yarrow

Design tip

Fall bloom is its strength, and it earns a place near a path or seating area used late in the year. In full sun it holds its shape best, and grouping several together keeps the color strong enough to be seen from across the garden.

Printable plant sheet (PDF)