Toxicity level
MildModerateSevere
- Some contain iron, pesticides or herbicides
- Varies
- Affects: Gut — more if iron/pesticide
Did you know? Plain fertilizer often just upsets the gut, but iron- or pesticide-rich ones are dangerous.
Verdict
Feed only in moderation
Species
🐱 Cats
Why this verdict for cats
Fertilizer usually causes mild stomach upset in cats; keep them off freshly treated lawns and store bags away, as some products contain more toxic additives.
Warning signs to watch for
- Vomiting
- Drooling
🍽️ Feeding it safely?
Frequently asked questions
Can cats eat fertilizer?
In moderation. Fertilizer usually causes mild stomach upset in cats; keep them off freshly treated lawns and store bags away, as some products contain more toxic additives.
How much fertilizer can cats have?
None — fertilizer is not safe for cats and should be avoided entirely. When in doubt, ask your vet.
Is fertilizer safe for dogs too?
Verdicts can differ between species. See the dog answer for fertilizer →
More household items for cats
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated June 22, 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List
CanMyPet provides general information reviewed against trusted sources (ASPCA, AKC, Pet Poison Helpline). It is not a substitute for professional veterinary advice. When in doubt, always contact your veterinarian.