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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 season
Growth Habit
Low clumping
Flavor Profile
Not applicable
Plant Characteristics
Blue-green foliage, sky-blue blooms
Use
Borders, coastal gardens
Growing Conditions
Cool, well-drained soil
Harvest Advantages
Unique foliage color
Plant Resistance
Cold tolerant
Mertensia maritima
Seed Names
Mertensia Maritima
Seed Type
Heirloom, open-pollinated
Mertensia maritima, commonly known as Oyster Plant, is a treasured heirloom perennial admired for its silvery blue-green leaves and delicate sky-blue flowers. A cool-season garden favorite, it thrives in well-drained soils and mild climates, making it ideal for borders and specialty home gardens seeking a unique ornamental touch.
Light Requirement
Full sun / Partial shade
Planting Depth
¼ inch
Sowing Method
Direct sow / Trays
Plant Spacing
12–18 inches
Days to Maturity
90–120 days
Soil Preparation
Cold stratification
Hardiness Zones
USDA 4–8
Water Needs
Regular moisture
Planting Season
Spring / Early autumn
Seed Count
Recommended Coverage
100
Up to 25 sq ft
500
Up to 125 sq ft
1000
Up to 250 sq ft