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Product Description
Add striking color and fragrance to your garden with Blue Cardinal Flower Seeds. Known for their vibrant blue blossoms and delicate aroma, these perennial flowers create a stunning display in borders, flower beds, and container gardens. They are perfect for attracting pollinators such as bees and butterflies, adding life and beauty to any outdoor space.
Vibrant Blue Blooms: Eye-catching flowers that enhance any garden space.
Fragrant Blossoms: Delicate scent adds sensory appeal to your garden.
Pollinator Friendly: Attracts bees, butterflies, and other beneficial insects.
Versatile Planting: Suitable for borders, beds, or containers.
Easy to Grow: Hardy perennial with reliable germination and strong growth.
Plant Type: Perennial flowering plant
Flower Color: Blue
Height: 24–36 inches
Light Requirements: Full sun to partial shade
Watering: Moderate; well-drained soil preferred
Blooming Season: Summer to early autumn
Hardiness Zone: 4–9
Seed Preparation: Soak seeds in lukewarm water for 8–12 hours before sowing to improve germination.
Soil: Use well-draining, fertile soil enriched with organic matter.
Sowing: Sow seeds on the soil surface or lightly cover; start indoors 6–8 weeks before the last frost or sow directly outdoors in spring.
Spacing: Allow 12–18 inches between seedlings for healthy growth.
Light & Temperature: Place in a sunny to partially shaded location with temperatures of 18–25°C (65–77°F).
Watering: Keep soil moist during germination, then water moderately once established.
Maintenance: Deadhead spent flowers to encourage continuous blooms and maintain plant health.

Life Cycle
Annual
Planting Season
Spring–Early Summer
Growth Habit
Mounding Spreading
Flavor Profile
Not
Plant Characteristics
Deep Black Blooms
Use
Borders, Containers
Growing Conditions
Full Sun, Loamy Soil
Harvest Advantages
Continuous Bloom
Plant Resistance
Heat Tolerant
Seed Names
Black Velvet Petunia
Seed Type
Hybrid Open-Pollinated
Light Requirement
Full Sun
Planting Depth
Surface Sow
Sowing Method
Indoor or Direct
Plant Spacing
10–12 Inches
Days to Maturity
80–90 Days
Soil Preparation
No Soaking Needed
Hardiness Zones
9–11
Water Needs
Moderate
Planting Season
Spring
Seed Count
Recommended Coverage
100
Up to 50 sq ft
500
Up to 250 sq ft
1000
Up to 500 sq ft