Is Poison Hemlock toxic to dogs?

Yes. According to Plants4Pets, Poison Hemlock is toxic to dogs. Agitation, tremors, drooling, diarrhea, paralysis, death Toxic principles: Various alkaloids This entry has not been manually verified yet — treat it as guidance only.

Is Poison Hemlock toxic to horses?

Yes. According to Plants4Pets, Poison Hemlock is toxic to horses. Agitation, tremors, drooling, diarrhea, paralysis, death Toxic principles: Various alkaloids This entry has not been manually verified yet — treat it as guidance only.

Which pets are most at risk from Poison Hemlock?

Our database flags Poison Hemlock as toxic to: cats, dogs, horses.

What should I do if my pet eats Poison Hemlock?

Remove remaining plant material, do not induce vomiting unless a vet instructs you to, and seek professional help immediately with the plant name ready.

Is Poison Hemlock toxic to cats, dogs? (Conium maculatum)

Poison Hemlock (Conium maculatum) is marked as potentially toxic to cats, dogs, horses in the Plants4Pets database. Keep this plant out of reach of curious pets and read the species-specific notes below.

Photos of Poison Hemlock (Conium maculatum)

Poison Hemlock (Conium maculatum) — plant photo, pet toxicity guide

Is Poison Hemlock toxic to cats, dogs or horses?

Cat Toxic Not verified

Agitation, tremors, drooling, diarrhea, paralysis, death Toxic principles: Various alkaloids
Dog Toxic Not verified

Agitation, tremors, drooling, diarrhea, paralysis, death Toxic principles: Various alkaloids
Horse Toxic Not verified

Agitation, tremors, drooling, diarrhea, paralysis, death Toxic principles: Various alkaloids

Community confirmations show that other users find this rating helpful. They are not verified by our team.

Poison Hemlock plant details and common names

Family: Umbelliferae

Also known as: Poison Parsley, Spotted Hemlock, Winter Fern, California Fern, Nebraska Fern, Deadly Hemlock

Safety advice if a pet eats Poison Hemlock

Many popular houseplants and garden species can cause vomiting, drooling, skin irritation or more serious symptoms when chewed by cats, dogs or horses. The information on this page is for educational purposes and does not replace a veterinary consultation.

If your pet has eaten any part of Poison Hemlock (Conium maculatum), note the amount ingested, watch for unusual behaviour and contact a veterinarian or pet poison helpline immediately.

Found outdated or incorrect data? Use the report form below or e-mail kontakt@plants4pets.pl with the plant name, species affected and your source — we review every submission.

FAQ: Poison Hemlock and pet toxicity

Is Poison Hemlock toxic to cats?: Yes. According to Plants4Pets, Poison Hemlock is toxic to cats. Agitation, tremors, drooling, diarrhea, paralysis, death Toxic principles: Various alkaloids This entry has not been manually verified yet — treat it as guidance only.
Is Poison Hemlock toxic to dogs?: Yes. According to Plants4Pets, Poison Hemlock is toxic to dogs. Agitation, tremors, drooling, diarrhea, paralysis, death Toxic principles: Various alkaloids This entry has not been manually verified yet — treat it as guidance only.
Is Poison Hemlock toxic to horses?: Yes. According to Plants4Pets, Poison Hemlock is toxic to horses. Agitation, tremors, drooling, diarrhea, paralysis, death Toxic principles: Various alkaloids This entry has not been manually verified yet — treat it as guidance only.
Which pets are most at risk from Poison Hemlock?: Our database flags Poison Hemlock as toxic to: cats, dogs, horses.
What should I do if my pet eats Poison Hemlock?: Remove remaining plant material, do not induce vomiting unless a vet instructs you to, and seek professional help immediately with the plant name ready.

Report an error or missing data

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Wrong toxicity for a cat, dog or horse
Missing or incorrect plant name
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Additional veterinary or botanical reference

Include the plant name (Conium maculatum), affected pet species and, if possible, a link to your source. We usually respond within a few business days.