Is it toxic to dogs?
Petunias
Petunia spp. · Solanaceae
Also called Garden petunia
Non-Toxic to dogs
No. ASPCA lists petunias as non-toxic to dogs, even though they belong to the nightshade family. Some of their nightshade relatives, such as tomato plants, are toxic.
Why it’s considered safe for dogs
Petunias are the trumpet-flowered annuals that fill window boxes, hanging baskets and flower beds all summer. ASPCA lists Petunia species as non-toxic to dogs, and names no toxic principle or clinical signs.
The nightshade family connection makes some owners nervous, and it is a fair reason to check. Petunias belong to the Solanaceae, which includes plants that are harmful to dogs. ASPCA lists tomato plants as toxic because of solanine, with drooling, loss of appetite, severe stomach and intestinal upset, low energy, weakness, enlarged pupils and a slow heart rate; it notes the ripe fruit is non-toxic. A family label is no guide, so the plant's own entry is what counts.
For petunias, the likelier hazards are the products used on them. Hanging baskets and beds are often fertilized, and slug or snail bait used in flower beds is dangerous to dogs. Eating plenty of any plant can also cause a mild upset stomach.
If your dog ate petunias
A nibbled petunia is not an emergency. ASPCA lists petunias as non-toxic, though your dog may have a mild upset stomach with vomiting or loose stool.
Call your vet if the signs persist, your dog ate a lot, or the bed was treated with fertilizer, pesticide or slug bait. Slug and snail bait (usually metaldehyde) is an emergency: Pet Poison Helpline says signs can start within one to two hours, with drooling, restlessness, vomiting and wobbliness, then tremors, seizures and high fever. In the US, ASPCA Animal Poison Control is at (888) 426-4435 and Pet Poison Helpline at (855) 764-7661 (fees may apply); elsewhere, call your local emergency vet.
Do not make your dog vomit at home. Keep the product packaging for the vet.
Keeping your dog safe
Put petunia baskets and window boxes where your dog cannot reach them, and use fencing or a border to keep dogs out of the beds. Cut off spent blooms into a closed bin so your dog does not forage.
Skip slug and snail bait in any bed your dog can reach, and store garden chemicals in a locked shed. Pet Poison Helpline warns that fertilizers may carry pesticides and other chemicals, and that larger ingestions can cause serious poisoning.
If you grow vegetables nearby, fence off tomato plants; ASPCA lists the plant as toxic, though ripe fruit is not. Other dog-friendly bloomers ASPCA lists as non-toxic include roses and marigolds (pot marigold).
Frequently asked questions
Are petunias safe for dogs?
ASPCA lists petunias as non-toxic to dogs. Eating a lot of any plant can still cause mild stomach upset.
Are petunias poisonous because they are nightshades?
No. Family membership does not decide toxicity. ASPCA lists petunias as non-toxic, while it lists tomato plants as toxic because of solanine.
What should I worry about in a petunia bed?
Chemicals mostly. Fertilizers, pesticides and slug bait can all poison dogs. Pet Poison Helpline says metaldehyde slug bait can cause tremors and seizures within hours.
Can dogs eat petunia flowers?
A flower or two will not poison a dog, but flowers are not food. Discourage chewing and keep baskets out of reach.
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