Plant guide
Cornflower
Centaurea cyanus
Cornflower is non-toxic to cats. Its blue blooms are suitable for a cat-conscious flower patch, though bouquets should be checked for other plants.
Non-toxic does not mean edible. Eating plant material can still upset your cat’s stomach.
What this guide covers: Centaurea cyanus only. Check the botanical name; a photograph alone cannot establish identity.
Photo:
Photo details
Centaurea cyanus — flowers and stems
By Thayne Tuason
License: CC BY-SA 4.0
Resized and converted to WebP for display; botanical details unchanged.
This displayed image is shared under the same CC BY-SA 4.0 license.
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Photo:
Photo details
Centaurea cyanus — flowers and stems
By Thayne Tuason
License: CC BY-SA 4.0
Resized and converted to WebP for display; botanical details unchanged.
This displayed image is shared under the same CC BY-SA 4.0 license.
Blue cornflower seeds
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Non-toxic does not mean edible. Chewing plants can still upset your cat’s stomach.
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Look for Centaurea cyanus and check the selected variety. Listings and availability can change.
Plant identity
- Scientific name
- Centaurea cyanus
- Scope
- Species
- Family
- Not recorded
- Also known as
- No reviewed aliases available
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How to grow this plant
Centaurea cyanus only. Check the botanical name; a photograph alone cannot establish identity.
- Light
- Sunny position or Some direct sun
Full sun to light shade; too much shade can make stems flop.
- Watering
Aim for moderate soil moisture; some dry conditions are tolerated.
- Temperature
- Temperature range not yet established
A cool-season annual; no indoor temperature interval proposed.
- Humidity
No specific humidity target established.
- Potting
- Well-drained soil; rich fertilizer is generally unnecessary.
- Through the year
- Deadhead to limit self-seeding, and support tall stems if needed.
Growing-guide sources
- Centaurea cyanus ↗NC State Extension · Accessed 2026-10-16
Centaurea cyanus only. Check the botanical name; a photograph alone cannot establish identity.
Growing advice reviewed 2026-10-16. Plant safety is assessed separately.
Reviewed safety information
- Toxic principle
- Not recorded in the reviewed evidence
- Reported signs
- Not recorded in the reviewed evidence
Missing information is unknown. It should not be interpreted as an absence of risk.
Safe alternatives
No verified alternative recommendations are available for this guide.