Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Pet safety reference
Daylily
Hemerocallis
Garden daylily that is not a true Lilium but is also acutely toxic to cats; commonly confused with true lilies.
Day lilyDaylilyHemerocallisHemerocallis lily
- Light
- sun
- Habit
- clumping perennial
- Care
- easy
Safety status
Dogs
Mixed evidenceSources disagree or only support a broad genus-level conclusion.
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, lethargy, loss of appetite progressing to acute kidney failure, similar to true lilies.
Escalation note
Treat feline exposure as an emergency even though daylilies are not in the Lilium genus.
Dogs — concern notes
Common signs
GI upset such as vomiting and diarrhea is the main reported sign; severe kidney failure is not the typical canine pattern.
Escalation note
Escalate for significant ingestion but the feline emergency profile does not translate to dogs.
Safer alternatives
Source evidence
ASPCA: Daylily
toxicology · 99% reliability
ASPCA lists daylily as toxic to cats with kidney failure potential; dogs show milder GI signs.
Pet Poison Helpline: Lily
veterinary · 96% reliability
Pet Poison Helpline groups daylily with true Lilium for feline nephrotoxicity risk.