Plants / Lobelia / dogs

Is Lobelia toxic to dogs?

Lobelia (Lobelia cardinalis) is toxic to dogs (S3 Toxic): the ASPCA lists lobeline, with depression, diarrhea, vomiting, excessive salivation, abdominal pain, and heart rhythm disturbances.

  • TOXINLobeline
  • WHAT TO EXPECTDepression; Diarrhea; Vomiting
  • CALL THE VETContact your vet promptly after ingestion. The ASPCA lists heart rhythm disturbances.
S0S1S2S3S4

Symptoms

SIGN
Depression
Diarrhea
Vomiting
Excessive salivation
Abdominal pain
Heart rhythm disturbances

If your dog just ate it

S3 PROTOCOL
1
Move Lobelia (Lobelia cardinalis) out of reach and contact your vet promptly after ingestion. The ASPCA lists heart rhythm disturbances. Bring a photo or piece of the plant.
2
When to call the vet: Contact your vet promptly after ingestion. The ASPCA lists heart rhythm disturbances.
Put it in my home →

Same floor look, minus the risk

3 floor plants graded S0 — non-toxic on record.

Care at a glance

Lightdirect
Waterevery 5–9 days
Humiditymedium
Difficulty●●○

FAQ

Is lobelia toxic to dogs?

Yes, for Lobelia cardinalis: S3 Toxic. The ASPCA lists "Lobeline" and "Depression, diarrhea, vomiting, excessive salivation, abdominal pain, heart rhythm disturbances". The same signs are on the Cardinal Flower and Indian Pink entries. Contact your vet promptly after ingestion.

Which plant does this lobelia verdict cover?

Lobelia cardinalis. The Lobelia, Cardinal Flower, and Indian Pink entries all use that scientific name. The family is Campanulaceae. Indian Pink on these entries is this scientific name. Plants with other scientific names are not covered or graded here. Check the scientific name on the tag.

What signs do the lobelia entries list?

The clinical-signs field reads "Depression, diarrhea, vomiting, excessive salivation, abdominal pain, heart rhythm disturbances". The toxic-principles field reads "Lobeline". The toxicity line reads "Toxic to Dogs, Toxic to Cats, Toxic to Horses". The entries do not name a part, a dose, or death. Contact your vet promptly after ingestion. Bring a photo or piece of the plant.

Is lobelia toxic to cats?

Yes, for Lobelia cardinalis: S3 Toxic. The ASPCA lists "Lobeline" and "Depression, diarrhea, vomiting, excessive salivation, abdominal pain, heart rhythm disturbances". The same signs are on the Cardinal Flower and Indian Pink entries. Contact your vet promptly after ingestion.

CITE THIS PAGE

Verdapaw Plant × Pet Safety Index, verdapaw.com/plants/lobelia, reviewed 2026-11-06