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Plant details
If you thought all cornflowers were blue then think again. 'Black Ball', as its name suggests, produces lovely rich milk-chocolate coloured blooms on thin wiry stems. Plants sown in August or September should produce blooms in early summer. This plant looks most effective when placed in clumps in borders, especially when surrounded by lighter coloured foliage or flowers.
Family: Asteraceae
Genus: Centaurea
Species: cyanus
Cultivar: Black Ball
Plant type: Hardy annual
Flower colour: Purple
Foliage colour: Blue-green
Feature: Flowers
Sun exposure: Full sun
Soil: Well-drained/light
Hardiness: Hardy
Skill level: Beginner
Height: 75cm
Spread: 30cm
Time to plant seeds: September to April
Flowering period: June to August
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