Is Tsusima Holly Fern toxic to cats?

No — tsusima holly fern 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. Polystichum is a true fern in the Dryopteridaceae family; ASPCA-listed Polystichum species (such as Western Sword Fern, Polystichum munitum, and Christmas Fern, Polystichum acrostichoides) are classified non-toxic with no toxic principle identified. Eating large amounts of fronds may still cause mild, temporary stomach upset.

Yes — the ASPCA lists tsusima holly fern 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: Tsusima Holly Fern is non-toxic to dogs as well. See the full tsusima holly fern 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.