Heirloom Eryngium Planum, commonly known as Sea Holly, is admired for its striking spiky blooms and silvery-blue foliage. This heirloom variety offers a long bloom season, making it perfect for borders, rock gardens, and pollinator-friendly landscapes. Easy to grow and low-maintenance, Eryngium Planum adds a unique architectural element and vibrant color to any garden.
Features:
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Heirloom Eryngium Planum variety
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Produces spiky, long-lasting silvery-blue blooms
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Ideal for borders, rock gardens, and pollinator-friendly landscapes
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Low-maintenance and easy to grow
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Attracts pollinators and adds structural interest
Specifications:
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Plant Type: Perennial flowering plant
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Height: 18–36 inches
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Bloom Time: Summer to early fall
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Light Requirements: Full sun
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Soil Preference: Well-draining soil
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Zones: USDA hardiness zones 4–8
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Planting Season: Spring after last frost
Planting & Sowing Instructions:
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Indoor Sowing: Start seeds indoors 6–8 weeks before the last frost. Press seeds lightly into moist, well-draining soil. Germination usually occurs within 14–21 days.
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Transplanting: Transplant seedlings outdoors after the last frost. Space plants 12–18 inches apart for healthy growth.
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Direct Sowing: Sow seeds directly into prepared soil after frost danger has passed. Cover lightly with soil and water gently.
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Care Tips: Water regularly to maintain even soil moisture. Deadhead spent flowers to encourage continuous blooming and maintain plant health. Mulch around plants to conserve moisture and moderate soil temperature.
