Is Dryopteris affinis 'Cristata' toxic to cats?

No — dryopteris affinis 'cristata' 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. True ferns in the Dryopteridaceae family (including Dryopteris erythrosora, the Autumn Fern) appear on the ASPCA non-toxic list with no toxic principle identified. As with any plant, nibbling large amounts of fronds may cause mild, transient stomach upset.

Yes — the ASPCA lists dryopteris affinis 'cristata' 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: Dryopteris affinis 'Cristata' is non-toxic to dogs as well. See the full dryopteris affinis 'cristata' 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.