Is it toxic to dogs?
Hyacinths
Hyacinthus orientalis · Asparagaceae
Also called Garden hyacinth, Dutch hyacinth
Toxic to dogs
Severity: Moderate
Yes. Hyacinths are toxic to dogs, especially the bulbs. Eating them can cause intense vomiting and diarrhea, sometimes with blood, plus depression and tremors.
- Toxic parts
- Bulb (highest concentration), Whole plant
- Toxic compounds
- Possibly narcissus-like alkaloids; calcium oxalate crystals
- Where you’ll find it
- House and garden
Signs of poisoning
- Intense vomiting
- Diarrhea, sometimes bloody
- Drooling
- Loss of appetite
- Depression and lethargy
- Tremors
Why it’s harmful to dogs
Hyacinths are fragrant spring bulbs with dense spikes of small bell flowers in pink, blue, purple or white. They're grown in garden beds and pots, and bulbs are often forced in water-filled glasses or pots indoors in winter.
The ASPCA lists the plant as toxic to dogs and suggests narcissus-like alkaloids as the likely cause. Merck Veterinary Manual adds calcium oxalate crystals and alkaloids, mainly in the bulbs, and mentions that stored bulbs can be within a pet's reach. Pet Poison Helpline says the whole plant is toxic, with the highest concentration in the bulbs, and bulb material risks persistent stomach upset and lethargy.
The ASPCA describes intense vomiting and diarrhea, sometimes with blood, and Merck notes that rare deaths have been reported after toxic doses. Dogs usually run into hyacinths while digging in beds or investigating bulbs left out in a bag or on a windowsill.
If your dog ate hyacinths
Take away any remaining pieces and note whether the bulb was involved. Call your vet, an emergency clinic or a poison helpline right away. In the US, ASPCA Animal Poison Control is (888) 426-4435 and Pet Poison Helpline is (855) 764-7661 (fees may apply); outside the US, call your local emergency vet. Please don't try to make your dog vomit at home.
Your vet may monitor your dog or give fluids and anti-nausea care if vomiting and diarrhea are severe. Bring the plant or a photo, and mention fertilizer or pesticide used on the bed.
Tremors, repeated vomiting, blood in the stool or unusual tiredness mean you should go to a clinic without delay.
Keeping your dog safe
Keep bulbs, whether stored or being forced indoors, on a high shelf or in a closed container. Plant outdoors where your dog can't dig, and cover fresh beds with mesh. Sweep up fallen flower spikes and trim old ones before your dog can reach them.
Teach a dependable "leave it" and supervise digging in fall. For indoor flowers that are listed by the ASPCA as non-toxic to dogs, African violets and Christmas cactus are lovely swaps.
Dog-safe alternatives
Frequently asked questions
Are hyacinths poisonous to dogs?
Yes. The ASPCA lists hyacinth as toxic to dogs, with vomiting, diarrhea (sometimes bloody), depression and tremors.
Which part of the hyacinth is the most toxic?
The bulb. Pet Poison Helpline says the whole plant is toxic with the highest concentration in the bulbs.
Are forced hyacinth bulbs dangerous?
Yes, a bulb sitting in a glass or pot indoors is still a hyacinth bulb. Keep it on a high shelf where your dog can't reach it.
Is a little bit dangerous?
A small nibble of flower or leaf may only cause mild stomach upset, but bulbs are a bigger worry. Call your vet if your dog ate any bulb.
Written from veterinary sources by the Pawsplained editorial team. Not yet reviewed by a veterinarian; this is general information, not a diagnosis or treatment plan. Updated Oct 30, 2026. Editorial policy