Plant guide
Common sunflower
Helianthus annuus
Common sunflower is considered non-toxic to cats. Plant material can still upset the stomach if chewed.
Non-toxic does not mean edible. Eating plant material can still upset your cat’s stomach.
What this guide covers: Helianthus annuus only; this assessment is not automatically extended to other sunflowers or treated bouquets.
Photo:
Photo details
Helianthus annuus — NC State Extension image 5844
By Albert Torello
License: CC BY-SA 2.0
Resized and converted to WebP for display; botanical details unchanged.
This displayed image is shared under the same CC BY-SA 2.0 license.
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Photo:
Photo details
Helianthus annuus — NC State Extension image 5844
By Albert Torello
License: CC BY-SA 2.0
Resized and converted to WebP for display; botanical details unchanged.
This displayed image is shared under the same CC BY-SA 2.0 license.
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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 Helianthus annuus and check the selected variety. Listings and availability can change.
Plant identity
- Scientific name
- Helianthus annuus
- Scope
- Species
- Family
- Not recorded
- Also known as
- No reviewed aliases available
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How to grow this plant
Helianthus annuus only; this assessment is not automatically extended to other sunflowers or treated bouquets.
- Light
- Sunny position
Full sun.
- Watering
Keep soil moist while establishing; established plants tolerate some drought.
- Temperature
- Temperature range not yet established
70-85 F is preferred; plant after frost danger has passed.
- Humidity
No specific humidity target established.
- Potting
- Well-drained soil; loam, sand or clay can work.
- Through the year
- Support tall stems in windy sites; this is an annual.
Growing-guide sources
- Helianthus annuus ↗NC State Extension · Accessed 2026-10-15
Helianthus annuus only; this assessment is not automatically extended to other sunflowers or treated bouquets.
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.
Sources & review
- Pet-safe plants (version 1) ↗Veterinary Poisons Information Service · Accessed
Safety last reviewed .