Cornflower Seeds – Black Ball

Bring rich, velvety color to your garden with Cornflower Seeds – Black Ball, a classic heirloom variety known for its deep, nearly black blooms. These easy-to-grow plants are ideal for borders, cut-flower gardens, pollinator spaces, and wildflower meadows. With their long-lasting blossoms and drought tolerance, Black Ball cornflowers make an excellent choice for both beginner and experienced gardeners.

Features

• Deep, dark burgundy-to-black blooms for dramatic garden appeal

• Fast-growing annual variety suitable for a wide range of climates

• Excellent for cut flowers, dried arrangements, and pollinator gardens

• Attracts bees and butterflies, supporting garden biodiversity

• Low-maintenance and tolerant of poor soils once established

Specifications

Botanical Name: Centaurea cyanus
Common Name (US): Cornflower
Variety: Black Ball
Plant Type: Annual
Growth Habit: Upright, branching
Height: 24–36 inches
Bloom Season:

• Spring to Summer (March–August depending on planting time)

Planting Season:

• Cool-season annual; best sown in fall (September–November) in mild climates or early spring (February–April) in colder regions

USDA Hardiness Zones:

• Suitable for Zones 3–9

• Fall planting: Zones 7–9

• Spring planting: Zones 3–6

Light Requirements: Full sun
Soil Requirements: Well-drained soil; tolerates low fertility
Germination Time: 7–14 days
Maturity: 75–90 days
Spacing: 6–12 inches