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Asteraceae
Centaurea cyanus
Centaurea cyanus
Also known as Setachna cyanus, Cyanus vulgaris, Centaurea segetalis, Centaurea cyanocephala
Native Plants · Cornflower · Annual · Cottage Garden · Wildflower · Blue Flowers · Pollinator · Cut Flower · Drought Tolerant · Easy Grow
Bachelor's button is an easy-going annual that thrives in full sun with minimal fuss — simply sow seeds directly in well-drained soil after the last frost. Water regularly but avoid waterlogging, as this plant is sensitive to soggy conditions. Deadhead spent blooms regularly to encourage a long and prolific flowering season.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water moderately; allow soil to dry slightly between waterings · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5–5.5
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 3a-10b
Form & growth
Mature size and habit
- Mature height
- 12 in – 6 ft
- Spread
- 2 ft
- Spacing
- 9 in apart
- Growth rate
- Moderate
- Root depth
- Deep
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Alabama, Alaska, Albania, Alberta, Algeria, Altay, Amur, Arizona, Arkansas, Austria, Baleares, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Cape Provinces, Central European Rus
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda, aspca
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