Is Mountain Cornflower toxic to cats?

No — mountain cornflower is listed by the ASPCA as non-toxic to cats. It is a sensible choice for a home with a cat; a curious nibble will not poison them, though no plant is meant to be eaten. Centaurea montana is not individually listed by the ASPCA, but its genus is consistently classified non-toxic: the ASPCA lists cornflower (Centaurea cyanus) and Russian knapweed (Centaurea repens) as Non-Toxic to dogs and cats. Treated as pet-safe on that genus grounding; note some Centaurea (e.g. C. solstitialis, C. repens) are a horse-only concern.

Yes — the ASPCA lists mountain cornflower as non-toxic to cats and dogs. A cat that chews a large amount of any foliage can still get a mild, brief stomach upset, so discourage grazing, but it will not be poisoned.

The ASPCA classification Growli uses applies to both cats and dogs: Mountain Cornflower is non-toxic to dogs as well. See the full mountain cornflower pet-safety guide for both species.

Reliable ASPCA non-toxic picks for a cat home include spider plant, calathea, parlor palm, peperomia, and most true ferns. Browse the best cats-safe plants list to check more before you buy.