Are hoyas safe for cats and dogs?
Hoya carnosa · Flowering houseplants
Non-toxic to cats and dogs
Hoya carnosa is confirmed by species, and that is the species this answer covers. The catalogue holds two hoyas, so an unusual one is not individually recorded here.
Source: ASPCA Toxic and Non-Toxic Plants.
Safe, and the name to check the label for is Hoya carnosa. The wax plant appears on the ASPCA's non-toxic list for both cats and dogs. That matters more here than it usually would, because the trailing plants it sits beside in a garden centre do not have the same record. The catalogue puts string of pearls on the toxic list at moderate severity, and string of bananas at mild. A hoya fills the same hanging basket and takes the same corner of the room, so it is the swap people are usually pointed to when the string succulents have to go.
Worth knowing anyway
Non-toxic does not mean edible. A cat that strips a vine can still be sick from the sheer volume of leaf, and vomiting that keeps going is a reason to ring your vet. Hoya stems leak a milky sap when they are cut or torn, which irritates skin rather than poisons, so rinse your hands after taking cuttings. The flowers drip a sticky nectar onto whatever sits underneath them.
Living with one
Hang one where a cat can reach it if you like, since a chewed vine is a plant problem rather than a vet problem. The care trap is water: the catalogue schedules a hoya around every ten days, and most of the ones that die indoors have been drowned by an owner treating them like a fern. It grows slowly enough that a hanging pot stays where you put it for years.
How to care for hoya
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 10 days, less in winter
- Light
- Bright, indirect
- Humidity
- 40% to 60%
- Temperature
- 16C to 27C
- Soil pH
- 6 to 6.5
- Family
- Flowering houseplants
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.
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Questions people actually ask
Are all hoyas safe for cats, or only the wax plant?
Only the two the list names. Hoya carnosa is the ASPCA entry this page rests on, and the catalogue also carries the sweetheart hoya, Hoya kerrii, as non-toxic to cats and dogs. There are hundreds of hoya species beyond those, and the list does not name them, so one sold under an unfamiliar name cannot be confirmed from it. Where a species cannot be matched to a listed entry, the app records it as unlisted instead of guessing.
Why has my hoya never flowered?
Usually light, sometimes just age. The catalogue puts it in bright, indirect light, and a plant kept dimmer than that puts out leaves and nothing else. Hoyas also flower from the short bare stub left behind by the last cluster, so trimming those off once the blooms drop removes the next round with them. A young plant may not be ready regardless of where it sits.
My cat pulled the vine down and chewed it. What should I do?
Nothing urgent. There is no poisoning risk from hoya leaves, so the question is how much went down rather than what it was. A single bout of sickness after a big mouthful is common and passes. If the vomiting repeats, or you are not certain the plant chewed was the hoya, ring your vet or an animal poison line and describe what you found.
Does the app flag the toxic trailing plants as well?
It does, and that is the useful half of it here. Every plant on a profile is checked against the cats and dogs in the household, so a string of pearls added next to a hoya gets a warning while the hoya does not. A severe result raises a full-screen warning you have to acknowledge rather than a badge you can miss. The toxicity check is free at every tier.