Pet safety
Is Honestytoxic to cats & dogs?
Lunaria annua
Quick verdict — at a glance
- Toxic to cats?
- Yes — mildly
- Toxic to dogs?
- Yes — mildly
- ASPCA classification
- Mildly toxic to pets · botanical name Lunaria annua
Is honesty safe for cats and dogs?
Not entirely — honesty is mildly toxic to cats and dogs. It rarely causes serious harm, but chewing it triggers real discomfort, so keep it out of a pet's reach. 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. Lunaria annua belongs to the Brassicaceae family and contains glucosinolates, which can irritate mucous membranes and disrupt thyroid function if ingested in quantity. It is not individually listed on the ASPCA toxic/non-toxic database. Exercise caution around pets that graze on garden plants; ingestion of small amounts is unlikely to cause serious harm but may cause mild gastrointestinal upset.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | Yes (mild) | Mildly toxic to pets |
| Dogs | Yes (mild) | Mildly toxic to pets |
What happens if a pet eats honesty?
Lunaria annua belongs to the Brassicaceae family and contains glucosinolates, which can irritate mucous membranes and disrupt thyroid function if ingested in quantity. It is not individually listed on the ASPCA toxic/non-toxic database. Exercise caution around pets that graze on garden plants; ingestion of small amounts is unlikely to cause serious harm but may cause mild gastrointestinal upset. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to honesty, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate honesty
- Remove any plant material from your pet's mouth and move honesty 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 honesty 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.
Pet-safe alternatives to honesty
Want the same look without the risk? These plants are listed as non-toxic to cats and dogs by the ASPCA and have similar care needs:
- Hoya — non-toxic to cats and dogs (care guide)
- Bromeliad — non-toxic to cats and dogs (care guide)
- Christmas cactus — non-toxic to cats and dogs (care guide)
- African violet — non-toxic to cats and dogs (care guide)
Honesty and pets — frequently asked questions
Is honesty toxic to cats?
Honesty (Lunaria annua) is mildly toxic to cats according to the ASPCA. Lunaria annua belongs to the Brassicaceae family and contains glucosinolates, which can irritate mucous membranes and disrupt thyroid function if ingested in quantity. It is not individually listed on the ASPCA toxic/non-toxic database. Exercise caution around pets that graze on garden plants; ingestion of small amounts is unlikely to cause serious harm but may cause mild gastrointestinal upset. Keep it out of reach and contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 if your cat chews it.
Is honesty toxic to dogs?
Per the ASPCA, Honesty (Lunaria annua) is mildly toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like honesty is best removed from the floor and low shelves entirely.
What happens if my pet eats honesty?
Lunaria annua belongs to the Brassicaceae family and contains glucosinolates, which can irritate mucous membranes and disrupt thyroid function if ingested in quantity. It is not individually listed on the ASPCA toxic/non-toxic database. Exercise caution around pets that graze on garden plants; ingestion of small amounts is unlikely to cause serious harm but may cause mild gastrointestinal upset. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to honesty, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate honesty?
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 honesty to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to honesty?
If you want a similar look without the risk, good non-toxic swaps include hoya, bromeliad, christmas cactus, african violet. All of these are listed as non-toxic to cats and dogs by the ASPCA, so they suit a home where pets have access to your plants.
Full honesty care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete honesty care guide, or browse the full pet-safe plant library to check another plant before you buy it.