Black Gem cornflower
Centaurea cyanus 'Black Gem'
USDA zones2 to 11
SunHandles full sun to partial sun
WaterHandles moderate to moist soil
Sizeup to 24 inches tall
- Growth rate
- Moderate
- Habit
- Erect
- Bloom season
- Spring, summer
- Soil types
- Sand, loam, clay, chalk
- Soil pH
- Acid, alkaline, neutral
Garden uses
Attracts
Notes
'Black Gem' cornflower (Centaurea cyanus 'Black Gem') is an annual for borders, cut flowers, pollinator gardens, and cottage gardens. It handles cool weather and a light frost. This plant likes full or part sun and average to moist soil of most types. It grows up to 24 inches tall with an erect habit and blooms in spring and summer. Butterflies, bees, and birds visit the flowers. Deer tend to browse other plants first.
Pairs well with Common poppy, False Queen Anne's lace, and California poppy.