Is String of Spades toxic to cats?

No — string of spades 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. ASPCA-listed as non-toxic to cats and dogs. Ceropegia woodii (rosary vine / string of hearts) is on the ASPCA non-toxic list, so this 'Heartless' cultivar is pet-safe; eating a large amount of strands may still cause mild stomach upset, and the dangling vines can tempt playful cats.

Yes — the ASPCA lists string of spades 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: String of Spades is non-toxic to dogs as well. See the full string of spades 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.