Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
dog safety reference
Is Fetterbush safe for dogs?
Lyonia spp.
Fetterbush is a genus of evergreen shrubs in the heath family that contains grayanotoxins, which are harmful if ingested by pets. These plants are typically found in woodland or wetland environments and are not commonly kept as indoor houseplants.
FetterbushLyoniaLyonia spp.Staggerbush
- Light
- Partial shade to full sun
- Habit
- Shrub
- Care
- Moderate
Safety status
What this means for your dog
Dogs: fetterbush is one of the grayanotoxin-bearing Ericaceae shrubs, alongside rhododendron, azalea, and mountain laurel. The Merck Veterinary Manual notes the toxin acts on sodium channels in nerve and cardiac muscle — a chewed branch is more than a stomach problem in a dog, it can affect the heart.
What to watch for
Look for drooling, vomiting, and diarrhoea first, then weakness, tremors, abdominal pain, lethargy, and slow or irregular heartbeat. The Merck manual reports gastrointestinal, cardiovascular, and CNS abnormalities; nectar, flowers, leaves, and stems are of greatest concern, but all parts are toxic.
Time window
Per the Merck Veterinary Manual, signs from grayanotoxin-containing plants typically develop within 1–4 hours of ingestion, occasionally up to 12 hours after.
When to call the vet
Call immediately. Suspected fetterbush ingestion in a dog warrants an emergency vet visit or a call to ASPCA Poison Control / Pet Poison Helpline — the cardiac effects can outpace the GI signs.
Sources: ASPCA, Merck Veterinary Manual.
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Dogs — concern notes
Common signs
Vomiting, diarrhea, abdominal pain, lethargy, and potential tremors or cardiac distress.
Escalation note
The grayanotoxins present in this plant can cause significant systemic distress. Seek immediate veterinary attention if ingestion is suspected.
Safer alternatives
No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.
Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
Fetterbush (Lyonia spp.) is listed as toxic to both cats and dogs due to the presence of grayanotoxins.
Questions about Fetterbush
Is fetterbush toxic to dogs?
Yes, fetterbush (Lyonia spp.) is toxic to dogs. The plant contains grayanotoxins throughout all its parts — including nectar, flowers, leaves, and stems — and ingestion can cause significant systemic distress including gastrointestinal, cardiovascular, and neurological effects.
What are the symptoms of fetterbush poisoning in dogs?
Signs typically begin with drooling, vomiting, and diarrhea, followed by weakness, tremors, abdominal pain, lethargy, and a slow or irregular heartbeat. Based on grayanotoxin exposure data from the Merck Veterinary Manual, symptoms usually develop within 1–4 hours of ingestion, though onset can be delayed up to 12 hours.
What should I do if my dog ate fetterbush?
Call your vet or ASPCA Animal Poison Control (888-426-4435) immediately — do not wait for symptoms to appear. The cardiac effects of grayanotoxin can outpace the GI signs, so suspected ingestion warrants an emergency vet visit even if your dog seems fine at first.
Which parts of fetterbush are poisonous to dogs?
All parts of the fetterbush plant are considered toxic to dogs, with nectar, flowers, leaves, and stems posing the greatest concern. Grayanotoxins are distributed throughout the plant, so there is no safe portion to expose a dog to.
Same dog verdict
Related plants for dogs
Azalea
Rhododendron spp
Azaleas are flowering shrubs in the Rhododendron genus that contain grayanotoxins, which can cause significant illness if ingested by pets. These plants are highly toxic and require immediate veterinary attention if consumption is suspected.
Potentially toxic for cats & dogs.
Barbados Pride
Poinciana gilliesii
Barbados Pride is a flowering shrub known for its striking yellow flowers and long red stamens. It contains compounds that can cause gastrointestinal distress if ingested by pets.
Potentially toxic for cats & dogs.
Boxwood
Buxus spp.
Boxwood is a popular evergreen shrub often used for hedging and topiary, containing steroidal alkaloids that can cause gastrointestinal distress if ingested. It is considered toxic to both cats and dogs.
Potentially toxic for cats & dogs.
Castor Bean
Ricinus communis
The African Wonder Tree is a fast-growing ornamental shrub known for its large, palm-like leaves and unique seed pods. It contains ricin, a highly potent toxin found throughout the plant, with the highest concentration in the seeds.
Potentially toxic for cats & dogs.