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Product Description
Bring striking color to your garden with Sea Blue Holly Flower seeds. Known for their vibrant blue blooms and seasonal flowering, these plants are perfect for flower beds, borders, and container planting. These seeds are heirloom and GMO-free, ensuring reliable growth and beautiful ornamental flowers for home gardeners.
Features & Specifications:
Plant Type: Sea Blue Holly
Seed Type: Heirloom, Non-GMO
Flower Color: Sea blue
Growth Habit: Upright, bushy, ornamental
Height: 20–50 cm (8–20 inches)
Bloom Time: Seasonal (spring to summer)
Ideal Use: Flower beds, borders, containers, seasonal displays
Climate: Prefers full sun to partial shade; well-drained soil
Planting & Sowing Instructions:
Soil: Use well-draining soil suitable for outdoor planting.
Sowing: Sow seeds 0.5–1 cm deep in seed trays or small pots.
Watering: Keep soil lightly moist until germination; avoid overwatering.
Light: Full sun to partial shade for optimal flowering.
Temperature: Germination occurs best at 18–22°C (64–72°F).
Germination: Seeds typically sprout within 2–4 weeks.
Transplanting: When seedlings have 2–3 sets of true leaves, transplant to garden beds, borders, or containers.

Life Cycle
Perennial Flowering Plant
Planting Season
Summer Seasonal Bloomer
Growth Habit
Upright Clumping Growth
Flavor Profile
Non Edible Variety
Plant Characteristics
Spiky Blue Bracts
Use
Borders Cut Flowers
Growing Conditions
Well Drained Sandy Soil
Harvest Advantages
Excellent Dried Flowers
Plant Resistance
Drought Tolerant Variety
Scientific Name: Eryngium planum
Seed Names
Eryngium Blue Holly
Seed Type
Heirloom Open Pollinated
Sea Blue Holly is a striking heirloom perennial valued for its metallic blue spiky bracts and strong upright stems. Thriving in full sun and well-drained sandy soil, it is drought tolerant and perfect for borders, seasonal displays, and long-lasting fresh or dried floral arrangements.
Light Requirement
Full Sunlight
Planting Depth
¼ Inch Deep
Sowing Method
Direct Outdoor Sow
Plant Spacing
12–18 Inches Apart
Days to Maturity
120–150 Days
Soil Preparation
Cold Stratify Seeds
Hardiness Zones
4–9 USDA
Water Needs
Low Moderate Water
Planting Season
Spring Early Fall
Seed Count
Recommended Coverage
100
Up to 90 sq ft
500
Up to 450 sq ft
1000
Up to 900 sq ft