Are button ferns safe for cats and dogs?
Pellaea rotundifolia · Fern
Non-toxic to cats and dogs
Pellaea rotundifolia is confirmed by species. It is a genuine fern, unlike the asparagus fern, and it asks for less humidity than the rest of them.
Source: ASPCA Toxic and Non-Toxic Plants.
Pellaea rotundifolia is on the ASPCA's non-toxic list for cats and dogs, so the answer is yes for both. Button ferns are the odd one out among the ferns: round leaflets on wiry dark stems, and a catalogue entry asking for 40% to 60% humidity and 13C to 21C, cooler than any other fern listed. That combination is the reason to buy one. It is the fern for people whose flat is too dry and too draughty for the lacy things they keep killing, and it does not need a bathroom to look presentable.
Worth knowing anyway
The non-toxic listing covers poisoning and nothing else. A dog that eats a bowlful of any greenery may well bring it back up, and if that goes on, your vet is the right call. Button fern leaflets are small and detach easily, so they end up scattered across the floor and hoovered up by a curious muzzle. That is mess rather than danger, though a fern stripped bare will not refill quickly.
Living with one
This is the fern for a cool bedroom windowsill or a north facing room, somewhere a cat can sit beside it without consequence. It earns its place as the replacement for a maidenhair, which the ASPCA list does not cover, and for anyone tired of misting. The catalogue puts it on a five day schedule that relaxes in winter, and the 13C to 21C range means a hot living room is the wrong home.
How to care for button fern
The starting schedule and conditions Kounts Care sets up for this species. Watering adapts from there based on the daylight where you live.
- Water
- About every 5 days, less in winter
- Light
- Medium light
- Humidity
- 40% to 60%
- Temperature
- 13C to 21C
- Soil pH
- 5.5 to 6.5
- Family
- Fern
Let the app remember this for you
Kounts Care holds your plants and your pets in one household, so it checks every new plant against the cats and dogs you actually own, names them in the warning, and runs the check again over your existing plants the day a new animal arrives. Toxicity warnings are free at every tier.
In review with Apple · iPhone, iOS 26 · Five profiles free when it lands
Questions people actually ask
Are all Pellaea ferns safe, or only the button fern?
The listing that applies here is for the button fern, Pellaea rotundifolia, which the ASPCA records as non-toxic to cats and dogs. Other Pellaea sold under different names are not automatically covered by that entry, so read the botanical name on the label. The fern to actually watch for is asparagus fern, which is on the ASPCA toxic list with mild effects for both species and is not a fern at all.
Why does my button fern keep going crisp at the tips?
Heat more often than dry air. A radiator under the windowsill pushes a room past the range this fern wants, and crisping follows. The catalogue only asks for 40% to 60% humidity, so misting is rarely the fix people think it is. The other usual cause is compost that stays wet, because a small pot in a cool room dries far more slowly than a warm one.
Will the app warn me if I add a plant that is not safe?
It will. Every plant on a profile is checked against the cats and dogs in the household, and a severe result raises a full screen warning you have to acknowledge rather than a badge you can scroll past. Where the ASPCA list has no entry for a species, the app says unlisted instead of guessing, which is the honest answer for a fern like crocodile fern.
My cat ate some of the leaflets. Should I worry?
Not about poisoning. Button ferns sit on the ASPCA non-toxic list for cats and dogs, so the leaflets carry no toxin to act on. Volume is the only issue, and vomiting that keeps repeating is worth a call to your vet or an animal poison line. Repeated chewing is more of a problem for the fern than for the cat, since a fern this small has few fronds to spare.