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 Heartleaf Philodendron safe for cats?
Philodendron hederaceum
Also known as Philodendron oxycardium
Heartleaf Philodendron is a popular trailing houseplant known for its heart-shaped leaves and ease of care. It contains insoluble calcium oxalate crystals that can cause irritation if ingested by pets.
CordatumHeartleaf PhilodendronPhilodendron hederaceumPhilodendron oxycardiumPhilodendron scandensSweetheart Plant
- Light
- Bright indirect to low light
- Habit
- Trailing or climbing
- Care
- Low
Safety status
What this means for your cat
Cats that chew a heartleaf philodendron leaf hit insoluble calcium oxalate crystals immediately — the pain is instant, which usually keeps a curious cat from eating much. ASPCA notes that in cats specifically, severe airway swelling, while uncommon, is the worst-case scenario worth watching for.
What to watch for
Pawing at the mouth, head shaking, and heavy drooling are the first signs. Watch for visible swelling of the lips or tongue, vomiting, difficulty swallowing, and any change in breathing — airway swelling is rare but can be life-threatening in cats.
Time window
ASPCA does not publish exact timing; pain and drooling typically begin within minutes of chewing and most cats are noticeably better within 12–24 hours once supportive care is started.
When to call the vet
Call your vet or ASPCA Poison Control (888-426-4435) immediately if you see facial/tongue swelling, labored breathing, or an inability to swallow. Persistent drooling, vomiting, or refusal to eat for more than an hour also warrants a call.
Sources: ASPCA, NC State Extension (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
Oral irritation, intense burning and irritation of mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing.
Escalation note
Ingestion typically causes immediate discomfort due to mechanical irritation from calcium oxalate crystals. Please contact your veterinarian if you suspect your cat has ingested any part of this plant.
Safer alternatives
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Source evidence
NC State Extension Plant Toolbox
botanical · 94% reliability
Philodendron hederaceum is a vining plant native to Central and South America, widely grown as a houseplant.
Same cat verdict
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