Product Description
Overview
Blue Eryngium Planting Seeds grow into dramatic perennial plants admired for their metallic blue, cone-shaped flower heads surrounded by spiky bracts and silvery-blue foliage. Commonly known as Sea Holly, Eryngium is prized for its architectural form, drought tolerance, and excellent performance in modern, cottage, and wildflower gardens. Perfect for borders, rock gardens, dry landscapes, patio containers, and long-lasting cut-flower arrangements, Blue Eryngium adds bold structure, rare color, and exotic charm to any garden space.
Features
Premium-quality, non-GMO Blue Eryngium Planting Seeds
Produces metallic blue, spiky Sea Holly flower heads
Ideal for garden beds, borders, rock gardens, and pots
Strong germination with upright, clump-forming perennial growth
Highly drought-tolerant once established
Excellent for fresh and dried flower arrangements
Highly attractive to bees and beneficial pollinators
Low-maintenance and beginner-friendly perennial flower
Specifications
Plant Type: Perennial
Common Name: Blue Eryngium, Sea Holly
Scientific Name: Eryngium planum / Eryngium spp.
Variety: Blue Flowering Type
GMO Status: Non-GMO
Heirloom: Yes
Growth Season: Spring–summer
USDA Zones: 4–9
Sun Exposure: Full sun
Soil Type: Well-drained, sandy or loamy soil
Bloom Time: Mid-summer to early autumn
Plant Height: 18–36 inches
Spacing: 12–18 inches
Watering: Low to moderate (drought tolerant)
Planting Guide
Sowing Method: Start indoors in trays or direct sow outdoors
Seed Preparation: Cold stratification for 2–4 weeks improves germination
Sowing Depth: 1/8 inch deep
Germination Time: 14–28 days after stratification
Ideal Temperature: 15–22°C
Transplanting: Transplant when seedlings are strong and well-rooted
