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Product Description
Plant in fertile welldrained soil with adequate sunlight. Water regularly and provide good airflow for healthy growth. Ideal for gardeners seeking organic sustainable seed options.

Life Cycle
Perennial
Planting Season
Cool to warm season
Growth Habit
Upright, branching
Flavor Profile
Not applicable
Plant Characteristics
Spiky metallic-purple flowers with silvery foliage
Use
Cut flowers, borders, xeriscaping, dried arrangements
Growing Conditions
Poor to average soils, excellent drainage
Harvest Advantages
Long-lasting fresh and dried blooms
Plant Resistance
Drought tolerant, deer resistant
Scientific Name: Eryngium planum
Seed Names
Purple Eryngium Seeds
Seed Type
Heirloom open-pollinated
Purple Eryngium, commonly known as sea holly, is a striking heirloom perennial admired for its bold, thistle-like purple blooms and architectural form. Highly valued in premium gardens and floral arrangements, this sun-loving plant thrives in dry, well-drained soils with minimal care. Ideal for borders, modern landscapes, and cut-flower gardens, eryngium adds texture, color, and long-lasting beauty to home gardens.
Light Requirement
Full sun
Planting Depth
⅛ inch (lightly cover)
Sowing Method
Indoor start or direct sow
Plant Spacing
12–18 inches
Days to Maturity
120–180 days
Soil Preparation
Cold stratification recommended
Hardiness Zones
USDA 4–9
Water Needs
Low to moderate (drought tolerant once established)
Planting Season
Spring / autumn
Seed Count
Recommended Coverage
100
Up to 10 sq ft
500
Up to 20 sq ft
1000
Up to 100 sq ft