Pet safety
Is Common Water Starworttoxic to cats & dogs?
Callitriche stagnalis
Quick verdict — at a glance
- Toxic to cats?
- No — non-toxic
- Toxic to dogs?
- No — non-toxic
- ASPCA classification
- Pet-safe · botanical name Callitriche stagnalis
Is common water starwort safe for cats and dogs?
Yes — the ASPCA lists common water starwort on the non-toxic side of its cat-and-dog reference. A chewed leaf still isn't dinner, but it won't trigger a poisoning. This classification follows the ASPCA Toxic and Non-Toxic Plant List, the most widely used reference for companion-animal plant safety in the US and the standard most UK vets cite as well. Callitriche stagnalis is not listed by ASPCA. No toxic compounds are documented for the Callitrichaceae family. Widely used in wildlife ponds with fish, amphibians, and waterfowl without reported toxicity.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | No | Pet-safe |
| Dogs | No | Pet-safe |
What happens if a pet eats common water starwort?
Because common water starwort is non-toxic, a curious nibble will not poison a cat or dog. That said, no plant is meant to be eaten: a large quantity of any foliage can still cause mild, short-lived stomach upset or vomiting simply through fibre and volume. Persistent vomiting, diarrhoea, or lethargy after eating any plant is always worth a call to your vet, because the reaction may be to soil, fertiliser, or a pesticide rather than the plant itself.
What to do if your pet ate common water starwort
- Remove any plant material from your pet's mouth and move common water starwort out of reach.
- Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
- Do not induce vomiting unless a vet or poison-control specialist instructs you to.
- Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
- Bring a leaf or photo of common water starwort to the appointment so it can be treated correctly.
This page is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide rather than the plant. If you are worried, always contact a vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.
Common Water Starwort and pets — frequently asked questions
Is common water starwort toxic to cats?
Common Water Starwort (Callitriche stagnalis) is non-toxic to cats according to the ASPCA. Callitriche stagnalis is not listed by ASPCA. No toxic compounds are documented for the Callitrichaceae family. Widely used in wildlife ponds with fish, amphibians, and waterfowl without reported toxicity. It is a sensible pick for a cat household, though no plant should be a regular snack.
Is common water starwort toxic to dogs?
Per the ASPCA, Common Water Starwort (Callitriche stagnalis) is non-toxic to dogs. Dogs that gulp large amounts of any foliage can still get a mild, brief stomach upset, so discourage grazing even on a non-toxic plant.
What happens if my pet eats common water starwort?
Because common water starwort is non-toxic, a curious nibble will not poison a cat or dog. That said, no plant is meant to be eaten: a large quantity of any foliage can still cause mild, short-lived stomach upset or vomiting simply through fibre and volume. Persistent vomiting, diarrhoea, or lethargy after eating any plant is always worth a call to your vet, because the reaction may be to soil, fertiliser, or a pesticide rather than the plant itself.
What should I do if my cat or dog ate common water starwort?
Stay calm. Remove any remaining plant material from your pet's mouth and take the plant away so they cannot eat more. Note roughly how much was eaten and when. Do not make your pet vomit unless a vet or poison-control specialist tells you to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice. Bringing a photo or a leaf of common water starwort to the appointment helps the vet treat it correctly.
Which other plants are safe for cats and dogs?
Reliable non-toxic houseplants on the ASPCA list include spider plant, areca palm, calathea, peperomia, and most true ferns. You can browse Growli's full pet-safety library to check any plant before you buy it, and every entry cites the ASPCA classification it is based on.
Full common water starwort care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete common water starwort care guide, or browse the full pet-safe plant library to check another plant before you buy it.