Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
cat safety reference
Is Cardinal Flower safe for cats?
Lobelia cardinalis
Lobelia cardinalis is a striking perennial known for its vibrant red, tubular flowers that attract hummingbirds. It contains alkaloids that can cause adverse reactions if ingested by pets.
Cardinal FlowerIndian PinkLobelia cardinalis
- Light
- Full sun to partial shade
- Habit
- Upright, clumping perennial
- Care
- Moderate
Safety status
What this means for your cat
Cats: a moderate concern, not an immediate emergency. Cardinal flower contains lobeline, a nicotine-like alkaloid that affects the autonomic nervous system. The plant is emetic, so cats often vomit on their own before a fatal dose is absorbed — but a real ingestion still warrants a vet call.
What to watch for
Most cats show drooling, vomiting, and diarrhea first. Watch for depression and abdominal pain, and — because lobeline acts on the heart — for an irregular or rapid heartbeat. Pupil dilation, marked weakness, or tremors suggest a larger ingestion and need urgent attention.
Time window
Exact onset and duration are not well documented in the cited sources. Lobeline is emetic, so vomiting tends to start soon after ingestion.
When to call the vet
Call your vet or ASPCA Poison Control (888-426-4435) any time you see persistent drooling, repeated vomiting, lethargy, or any sign of an irregular heartbeat. A nibble of leaf often passes with monitoring; chewed flowers, stems, or larger amounts need veterinary support.
Sources: NC State Extension, ASPCA (no first-aid guidance).
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Cats — concern notes
Common signs
Vomiting, diarrhea, drooling, lethargy, and in severe cases, tremors or rapid breathing.
Escalation note
Ingestion can cause significant gastrointestinal distress. Please contact your veterinarian or an animal poison control center immediately if you suspect your cat has ingested any part of this plant.
Safer alternatives
No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.
Source evidence
NC State Extension Plant Toolbox
botanical · 94% reliability
Lobelia cardinalis is a native perennial that thrives in moist soils and is known for its high toxicity if ingested.
Questions about Cardinal Flower
Is Cardinal Flower toxic to cats?
Yes, Cardinal Flower (Lobelia cardinalis) is potentially toxic to cats. It contains alkaloids, including lobeline, that can cause vomiting, diarrhea, drooling, and lethargy if ingested.
What symptoms will my cat show after eating Cardinal Flower?
The most common signs are drooling, vomiting, and diarrhea. In more serious cases you may see depression, abdominal pain, pupil dilation, weakness, tremors, or an irregular or rapid heartbeat — the last group suggests a larger ingestion and needs urgent attention.
What should I do if my cat ate Cardinal Flower?
A small nibble can often be monitored at home, but call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 any time you see persistent drooling, repeated vomiting, lethargy, or any sign of heart irregularity. Chewed flowers, stems, or larger amounts warrant veterinary support rather than a wait-and-see approach.
How quickly does Cardinal Flower poisoning affect cats?
Exact onset times are not well documented, but lobeline is an emetic, so vomiting tends to start soon after ingestion. If your cat has eaten any part of the plant and symptoms appear quickly, treat it as urgent and contact a vet or poison control promptly.
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