Is Upright European Hornbeam toxic to cats?

No — upright european hornbeam 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. Carpinus betulus (hornbeam) is not listed as toxic by the ASPCA and is not recognised as a poisonous plant in major veterinary or horticultural toxicology references (ASPCA, RHS). No toxic principles have been documented in the genus. Considered safe for gardens with pets, though ingestion of bark or large amounts of any plant material may cause mild gastrointestinal upset.

Yes — the ASPCA lists upright european hornbeam 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: Upright European Hornbeam is non-toxic to dogs as well. See the full upright european hornbeam 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.