Is Heart-Leaf Krohniana toxic to cats?

No — heart-leaf krohniana 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. Hoya krohniana is not individually listed in the ASPCA toxic/non-toxic plant database, but the genus is clean: ASPCA lists Hoya kerrii (Sweetheart Hoya) as non-toxic to dogs, cats and horses and Hoya carnosa (Wax Plant) as non-toxic to dogs and cats, with no Hoya species flagged as toxic. It is therefore considered pet-safe; as with any plant, nibbling can cause mild GI upset, so confirm with your vet if concerned.

Yes — the ASPCA lists heart-leaf krohniana 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: Heart-Leaf Krohniana is non-toxic to dogs as well. See the full heart-leaf krohniana 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.