📄 Download the free printable poster (PDF)
The most dangerous plants for dogs
These plants can cause organ failure or death. Any exposure is an emergency:
- Autumn Crocus: bone marrow suppression (days later), death.
- Azaleas: abnormal heart rhythm, tremors, seizures or coma.
- Foxglove: weakness and collapse, death.
- Lily of the Valley: seizures, collapse and death.
- Oleander: tremors, death.
- Sago Palms: liver failure, seizures and death.
- Yew: very slow or irregular heartbeat, seizures.
Sago palm is the most dangerous common plant for dogs. A seed or two can cause liver failure. Dogs also dig up and eat bulbs (tulips, daffodils, hyacinths), which hold the highest concentration of toxins.
Common houseplants toxic to dogs
Many popular houseplants, including pothos, monstera, philodendron and peace lilies, contain calcium oxalate crystals. They cause immediate mouth pain, drooling and vomiting but rarely serious harm, because pets stop chewing quickly.
Safe plants for dogs
Looking for something you can keep without worry? See our list of plants safe for dogs, including spider plants, calatheas, Boston ferns, orchids and money trees.
How we rate toxicity
- Non-toxic Listed as non-toxic by the ASPCA. Large amounts may still cause mild stomach upset.
- Mildly toxic Usually causes mouth irritation, drooling, vomiting or diarrhea that resolves with supportive care.
- Toxic Can cause significant illness, especially in larger amounts or from bulbs and tubers. Call a vet.
- Highly toxic Can cause organ failure or death. Emergency care is needed after any exposure.
Looking for cats? See plants toxic to cats. For food, see can dogs eat…?