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Product Description
Bring elegance and lasting beauty to your garden with Dark Blue Hydrangea seeds, an heirloom variety prized for its striking deep blue blooms and easy-care growth. Perfect for borders, containers, or as a focal point in your garden, these low-maintenance plants create a stunning floral display with minimal effort.
Heirloom Variety: Preserves traditional plant genetics for future planting.
GMO-Free: 100 Pcs% natural, non-modified seeds.
Low Maintenance: Easy-to-grow and adaptable to various garden conditions.
Vibrant Blooms: Produces deep blue flowers that add elegance to any garden.
Versatile Planting: Suitable for borders, containers, or mixed garden beds.
Seed Type: Dark Blue Hydrangea
Plant Height: 18–36 inches (approx.)
Flower Color: Deep Blue
Growth Habit: Upright, bushy flowering plant
Germination Time: 14–28 days under optimal conditions
Sowing: Sow seeds indoors in pots or trays with well-draining soil mix, or sow directly outdoors after the last frost.
Depth: Lightly cover seeds with a thin layer of soil.
Watering: Keep soil lightly moist until seedlings emerge; avoid overwatering.
Light: Full sun to partial shade for best growth and flowering.
Temperature: Maintain 18–25°C (65–77°F) for optimal germination.
Transplanting: When seedlings develop 2–3 true leaves, transplant into garden beds or containers with spacing of 12–24 inches.
Care: Remove spent flowers to encourage continuous blooming and maintain healthy growth.

Life Cycle
Perennial shrub
Planting Season
Spring fall
Growth Habit
Bushy upright
Flavor Profile
Mild floral
Plant Characteristics
Large blue blooms
Use
Ornamental landscaping
Growing Conditions
Moist fertile soil
Harvest Advantages
Long bloom period
Plant Resistance
Pest tolerant
Hydrangea macrophylla
Seed Names
Hydrangea seeds
Seed Type
Heirloom open-pollinated
Dark Blue Hydrangea is a stunning ornamental flowering shrub known for its vibrant deep blue mophead blooms. Scientifically called Hydrangea macrophylla, this plant thrives in garden beds and containers, producing lush flowers that enhance landscapes with elegance. Soil pH influences its blue coloration, making it a unique and attractive choice for home gardeners.
Light Requirement
Partial shade
Planting Depth
Surface sowing
Sowing Method
Indoor start
Plant Spacing
3 to 5ft
Days to Maturity
365 days
Soil Preparation
Cold stratification
Hardiness Zones
5 to 9
Water Needs
Regular watering
Planting Season
Spring early
Seed Count
Recommended Coverage
100
20 sq ft
500
100 sq ft
1000
200 sq ft