Product Description
Overview
Blue Sea Holly Seeds grow into striking perennial plants admired for their spiky, steel-blue flower heads surrounded by jagged, silver-blue bracts. Scientifically known as Eryngium, Sea Holly is prized for its architectural structure, drought tolerance, and long-lasting blooms that hold their color even when dried. Perfect for rock gardens, cottage gardens, modern landscapes, borders, and cut flower use, Blue Sea Holly adds bold texture and cool-toned beauty to any garden.
Features
Premium-quality, non-GMO Blue Sea Holly Seeds
Produces metallic-blue spiky flower heads with silver bracts
Ideal for garden borders, rock gardens, pots, and dry landscapes
Strong germination with upright, clump-forming perennial growth
Excellent for cut flowers and dried floral arrangements
Highly attractive to bees and beneficial pollinators
Heat and drought tolerant once established
Low-maintenance and beginner-friendly perennial flowering plant
Specifications
Plant Type: Perennial
Common Name: Blue 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 once established)
Planting Guide
Sowing Method: Start indoors or direct sow outdoors
Seed Preparation: Cold stratification for 2–4 weeks improves germination
Sowing Depth: 1/8 inch deep
Germination Time: 14–30 days
Ideal Temperature: 15–22°C
Transplanting: Transplant when seedlings are strong and well-rooted
