| Verdict for cats | Caution |
| Severity | 2 / 5 — Mild — usually stomach upset; watch them. |
| Safe amount | A taste at most |
| Category | Vegetable |
| Source | ASPCA Animal Poison Control — Toxic and Non-Toxic Plants database; VCA Animal Hospitals — pet health library · reviewed 2026-08-07 · confidence: medium |
The vegetable is not toxic to cats but is of no benefit and tough to chew. The ornamental asparagus fern IS listed by the ASPCA as toxic to cats — that is the one to keep out of reach.
Don't make it a habit. Watch for vomiting, diarrhea or a lost appetite over the next day and call your vet if it doesn't settle or your cat seems unwell.
Never induce vomiting and never give any medicine unless a vet tells you to — it can do more damage than the poison. What we will and won't tell you.
If you're sharing food because you want to treat them, a treat formulated for cats does the job without the guesswork.
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Can dogs eat asparagus? — Feed with caution to dogs.
Not toxic, but be careful — asparagus isn't poisonous to cats, and it comes with caveats that matter. The vegetable is not toxic to cats but is of no benefit and tough to chew. The ornamental asparagus fern IS listed by the ASPCA as toxic to cats — that is the one to keep out of reach.
Watch for: Vomiting; Diarrhea or loose stools; Loss of appetite; Belly discomfort or unusual tiredness. Some signs lag by a day — call, don't wait.
The safe amount is a taste at most, as an occasional treat rather than a daily habit. Large amounts mainly cause stomach upset; if that doesn't settle within a day, call your vet.