Poisonous Plants for Cats

June 2, 2025
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Cats are curious creatures, and sometimes this curiosity leads them to chew on houseplants or garden greenery. Sadly, many common plants are toxic to cats — some even fatally so. Here’s what every cat owner should know. 

Plants That Are Toxic to Cats: 

  • Lilies (ALL types: peace, tiger, stargazer, Easter) – Extremely toxic; can cause acute kidney failure from even tiny amounts. 
  • Aloe Vera – Can cause vomiting, lethargy, and diarrhoea. 
  • Pothos (Devil’s Ivy) – Irritates mouth and stomach. 
  • Sago Palm – Can cause liver failure. 
  • Dieffenbachia (Dumb Cane) – Can cause burning and swelling in the mouth. 
  • Autumn Crocus – Causes severe stomach upset, kidney/liver damage. 
  • Yew Tree – Toxic to many animals; even a small amount can be fatal. 

Indoor Cats & Houseplants 

Even if your cat stays indoors, houseplants can pose a risk. Always research new plants before bringing them home and consider using cat-safe alternatives like: 

  • Spider plant 
  • Catnip or cat grass 

If You’re Unsure: 

  • Snap a photo of the plant. 
  • Remove your cat from the area. 
  • Call Oathall Vets or an emergency service immediately. 

Cats often show signs such as vomiting, drooling, lethargy, or seizures after ingesting something toxic. Don’t wait for symptoms to appear — early treatment is vital. 

 

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