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Product Description
Add striking texture and long-lasting color to your garden with Blue Holly Eryngium Flower Seeds. Known for their spiky blue blooms and extended flowering period, these seeds are perfect for borders, rock gardens, or container gardens. Ideal for gardeners seeking low-maintenance, eye-catching plants, Blue Holly Eryngium brings unique structure and vibrant color to any home garden.
Seed Type: Blue Holly Eryngium Flower Seeds
Growth Habit: Upright perennial with spiky, architectural foliage
Blooms: Blue thistle-like flowers, long-lasting through the season
Germination Rate: High under proper care
Ideal For: Borders, rock gardens, containers, and home gardens
Lifespan: Perennial with proper care
Special Attribute: Long bloom season, low-maintenance, and visually striking
Sowing Time: Sow indoors in early spring or outdoors after the last frost.
Soil Requirements: Well-draining, fertile soil enriched with organic matter.
Sowing Depth: Lightly cover seeds with about 1/8 inch of soil.
Watering: Keep soil evenly moist until seedlings establish; reduce watering once established.
Light Requirements: Full sun for optimal growth and flowering.
Germination Period: Typically 2–4 weeks under warm, consistent conditions.
Transplanting: Thin or transplant seedlings once sturdy, spacing 12–18 inches apart.

Life Cycle
Perennial
Planting Season
Cool to warm season
Growth Habit
Upright clumping plant with spiny foliage
Flavor Profile
Not applicable
Plant Characteristics
Metallic blue cone-shaped flower heads surrounded by spiky bracts
Use
Borders, cottage gardens, rock gardens, pollinator gardens, cut and dried flower arrangements
Growing Conditions
Well-drained soil with plenty of sunlight and good air circulation
Harvest Advantages
Long-lasting blooms ideal for fresh bouquets and dried floral displays
Plant Resistance
Drought tolerant, deer resistant, relatively low maintenance
Scientific Name: Eryngium planum
Seed Names
Blue Holly Eryngium Seeds
Seed Type
Heirloom open-pollinated (GMO Free)
Blue Holly Eryngium is a striking ornamental perennial known for its metallic blue flower heads and spiky architectural form. This unique plant thrives in sunny garden beds and attracts pollinators like bees and butterflies. Its long-lasting blooms make it highly valued for both fresh and dried floral arrangements, adding texture and color to garden landscapes.
Light Requirement
Full sun
Planting Depth
¼ inch (lightly cover with soil)
Sowing Method
Start indoors after stratification or direct sow outdoors
Plant Spacing
12–18 inches
Days to Maturity
90–120 days
Soil Preparation
Cold stratification recommended for 2–4 weeks
Hardiness Zones
USDA 4–9
Water Needs
Low to moderate; prefers well-drained sandy or loamy soil
Planting Season
Spring or fall
Seed Count
Recommended Coverage
100
Up to 12 sq ft
500
Up to 25 sq ft
1000
Up to 125 sq ft