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Vladimir Beresnev

❮ ❯

Growing Info

Scarification: Soak in water, let stand in water for 24 hours

Stratification: cold stratify for 30 days

Germination: sow seed 1/4" deep, tamp the soil, mulch the seed bed

Other: can be fall sown without stratification.

Native to: Central and Southern Europe, Southeastern Europe

Native

Introduced

Eryngium planumEryngium planum

Blue Eryngo, Flat Sea Holly, Flat-leaved Eryngium

In Stock: 4.75 lb (Total:4.75lb)

Eryngium planum

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4.75 lb

Details

Germination:

91%

Germination test:

Cut (Full Seed)

Purity:

98%

Seeds per lb:

254,239

Quantity:

4.75 lb

Collected in:

Poland

Crop year:

2025

Min. hardiness zone:

Item ID:

1837619

Characteristics

Growing Info

Scarification: Soak in water, let stand in water for 24 hours

Stratification: cold stratify for 30 days

Germination: sow seed 1/4" deep, tamp the soil, mulch the seed bed

Other: can be fall sown without stratification.

Native to: Central and Southern Europe, Southeastern Europe

Native

Introduced

Eryngium planum, more commonly known as Blue Eryngo or Flat Sea Holly, is an exceptional perennial renowned for its unique ornamental appeal and robust garden performance. Belonging to the Apiaceae family, this captivating plant originates from Central and Southeastern Europe and effortlessly brightens gardens with its stunning steel-blue, thistle-like flower heads. Growing to heights of 2 to 3 feet with a spread of 1 to 2 feet, Eryngium planum showcases a clump-forming habit with branched, spiny stems covered in bluish-green, deeply lobed foliage.

From June to September, it delights garden enthusiasts with profuse blooms, each spherical flower head adorned with metallic blue bracts. This attribute, coupled with its colorful, slightly pungent leaves, adds a dramatic texture to any landscape. Thrive in full sun and well-drained, sandy or loamy soils, Flat Sea Holly dazzles with its intensely colored flowers, attracting pollinators such as bees and butterflies. Its resilience against drought, poor soils, and coastal winds, paired with deer and rabbit resistance, makes it an ideal choice for xeriscaping or low-maintenance gardens. Perfect for rock gardens, perennial borders, or cottage gardens, it also shines in dried floral arrangements.