Irises are toxic to dogs, and the most dangerous part is the underground rhizome, which dogs dig up. The plant irritates the mouth and gut, causing drooling, vomiting, and diarrhea. Like tulip and daffodil bulbs, the buried part carries the concentrated toxin.
Call a vet or poison control now. Do not wait for symptoms.
ASPCA Animal Poison Control (888) 426-4435 or Pet Poison Helpline (855) 764-7661. A consultation fee may apply.
Source-backed guidance. Not individualized veterinary advice.(more)
Compiled from veterinary poison-control and medical references, including the ASPCA Animal Poison Control Center, Pet Poison Helpline, and Merck Veterinary Manual.
Part of our guide to My Dog Ate Iris: What to Do Next.
Enter your dog's details for a straight answer sized to them.
Why Iris is dangerous
Irises contain irritant compounds (including irisin and pentacyclic terpenoids) that are most concentrated in the rhizome, the thick underground stem. Chewing the plant, and the rhizome especially, irritates the mouth and digestive tract.
Part of the Tulip guide
For related dog-safety questions and product-by-product answers, see the complete tulip guide.
Signs to watch for
Drooling, vomiting, diarrhea, mouth irritation, lethargy
Related items
Check the exact item or ingredient before assuming two similar exposures carry the same risk.
What to do next
Move your dog away from the bed, rinse the mouth if you can, and call your vet if the rhizome was eaten, signs are repeated, or your dog is small.
🚨Step-by-step: what to do in the first 10 minutes →Available 24/7. A consultation fee may apply.
A closer look at iris
Irises contain irritant compounds (including irisin and pentacyclic terpenoids) that are most concentrated in the rhizome, the thick underground stem. Chewing the plant, and the rhizome especially, irritates the mouth and digestive tract. The details below use the specific facts for this exposure, rather than treating it like every other plant question.
1. Start with the exact exposure
For a closely related comparison, read Tulip. A nibble of leaf or flower usually causes drooling and mild stomach upset. Digging up and eating the rhizome is the bigger exposure, since that is where the irritants concentrate, and a small dog that ate rhizome is the case to call about.
2. Use the facts to decide whether to monitor or call
Another helpful reference is Daffodil. A small leaf or flower nibble in a bright dog can usually be watched at home with water available. Rhizome eaten, repeated vomiting or diarrhea, a small dog, or drooling and mouth pain that does not settle.
3. If the details are uncertain
Follow the first 10 minutes guide. Move your dog away from the bed, rinse the mouth if you can, and call your vet if the rhizome was eaten, signs are repeated, or your dog is small.
FAQ
A nibble of leaf or flower usually causes drooling and mild stomach upset. Digging up and eating the rhizome is the bigger exposure, since that is where the irritants concentrate, and a small dog that ate rhizome is the case to call about.
A small leaf or flower nibble in a bright dog can usually be watched at home with water available.
Rhizome eaten, repeated vomiting or diarrhea, a small dog, or drooling and mouth pain that does not settle.
- ASPCA APCC, toxic and non-toxic plants: iris
- ASPCA Animal Poison Control: toxic and non-toxic plants
- Merck Veterinary Manual: overview of household hazard toxicoses in animals