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Plants Toxic to Cats and Dogs - Complete Avoidance Guide

Pet Safety Resource

Plants Toxic to Cats and Dogs: A Complete Avoidance Guide

Protect your pets with this comprehensive reference guide. Learn which common houseplants pose serious toxicity risks, how to recognize poisoning symptoms, and discover beautiful ASPCA-verified non-toxic alternatives for every variety covered here.

Pet Poisoning Emergency Contacts

If your pet has ingested a potentially toxic plant, contact emergency veterinary or poison control services immediately. Do not wait for symptoms to appear.

Remove any plant material from your pet's mouth and collect a sample or photograph of the plant for identification.

ASPCA Animal Poison Control Center

(888) 426-4435

Pet Poison Helpline

(855) 764-7661

Common Toxic Houseplants: What to Remove from Your Home

These are among the most frequently encountered toxic houseplants. Many are widely sold by general plant retailers without prominent safety warnings. If any of these are currently in your home, we recommend replacing them with ASPCA-verified non-toxic alternatives.

Lilies

Lilium and Hemerocallis species
Severe / Potentially Fatal

Among the most dangerous plants for cats. Even tiny amounts of pollen can cause acute kidney failure. Water from a vase containing lilies is also considered dangerous. Cats and dogs should have zero access to any lily variety.

Sago Palm

Cycas revoluta
Severe / Potentially Fatal

All parts are highly toxic, with seeds being the most concentrated. Can cause liver failure, seizures, and death in both cats and dogs. Requires immediate emergency veterinary treatment if ingested.

Oleander

Nerium oleander
Severe / Potentially Fatal

Contains cardiac glycosides that disrupt heart function. Even dried leaves remain toxic. Can cause fatal cardiac arrhythmias. Commonly found in outdoor landscapes in warm climates; dangerous if brought indoors or accessed by pets outdoors.

Azaleas and Rhododendrons

Rhododendron species
Severe

Contains grayanotoxins that disrupt nerve and heart function. Even small amounts can cause severe vomiting, drooling, muscle weakness, and cardiac complications in both cats and dogs.

Dieffenbachia

Dieffenbachia seguine
Moderate

Also called Dumb Cane. Contains insoluble calcium oxalate crystals that cause immediate intense oral pain and swelling. Can interfere with breathing and swallowing if consumed in significant quantity.

Philodendron

Philodendron species
Moderate

Causes oral irritation, excessive drooling, and difficulty swallowing due to calcium oxalate crystals. A common and popular houseplant genus, which makes this toxicity risk particularly important for pet owners to know.

Pothos

Epipremnum aureum
Moderate

Also known as Devil's Ivy. One of the most popular trailing houseplants, and one of the most commonly encountered toxic varieties in pet-owning homes. Causes oral irritation, vomiting, and drooling.

Peace Lily

Spathiphyllum species
Moderate

Despite its gentle name, peace lily is toxic to cats and dogs. Contains calcium oxalate crystals causing mouth irritation, drooling, and digestive upset. Not a true lily, but still poses meaningful toxicity risk.

Monstera

Monstera deliciosa
Moderate

The widely popular Swiss Cheese Plant contains insoluble calcium oxalate crystals. Causes oral pain, drooling, and difficulty swallowing. Its dramatic foliage has made it a design staple, making this toxicity risk especially relevant for households with pets.

Snake Plant

Sansevieria trifasciata
Mild to Moderate

Frequently marketed for its low-maintenance care and air-purifying qualities. Contains saponins that cause nausea, vomiting, and diarrhea in cats and dogs. A popular choice that must be avoided in pet households.

Aloe Vera

Aloe barbadensis
Mild to Moderate

The latex component in aloe leaves causes gastrointestinal upset, lethargy, and changes in urine color in dogs and cats. While beneficial for human topical use, aloe is not appropriate for households with pets who may chew on plant foliage.

ZZ Plant

Zamioculcas zamiifolia
Mild to Moderate

A popular low-light, low-maintenance plant that contains calcium oxalate crystals. Can cause stomach upset and skin or mucous membrane irritation in cats and dogs. Often recommended for beginners, making its toxicity important to flag.

Recognizing Plant Poisoning Symptoms

Early symptom recognition can be critical. Contact your veterinarian immediately if you observe any of the following after a pet has accessed a plant. Do not wait to see if symptoms resolve on their own.

Immediate Symptoms (0 to 2 Hours)

  • Excessive drooling or salivation
  • Pawing at mouth or rubbing the face
  • Visible swelling of mouth, tongue, or lips
  • Difficulty swallowing
  • Vomiting or repeated retching
  • Sudden loss of appetite

Gastrointestinal Symptoms

  • Nausea and repeated vomiting
  • Diarrhea, potentially with blood
  • Abdominal pain or bloating
  • Sudden disinterest in food
  • Excessive thirst
  • Changes in urination frequency or color

Neurological Symptoms

  • Unusual lethargy or weakness
  • Depression or unresponsiveness
  • Muscle tremors or seizures
  • Loss of coordination or stumbling
  • Confusion or disorientation
  • Uncharacteristic behavioral changes

Emergency Warning Signs

  • Labored or rapid breathing
  • Irregular heartbeat or heart palpitations
  • Collapse or inability to stand
  • Loss of consciousness
  • Severe dehydration
  • Signs of organ distress

Prevention: Protecting Your Pets from Toxic Plants

  • Research every plant using the official ASPCA Animal Poison Control Center database before bringing it home, regardless of what the retailer tells you
  • Verify by scientific name, not common name, since common names are often shared by multiple species with different toxicity profiles
  • Even with ASPCA-verified non-toxic plants, discourage pets from eating plant material to avoid mild digestive upset
  • Remove fallen leaves, petals, and berries from floors immediately, particularly in households with cats who may bat plants down from shelves
  • Never assume a plant is safe because it is widely sold or popular; many of the most toxic houseplants are bestsellers at general retailers
  • Be cautious with fresh-cut bouquets and floral arrangements, which frequently include toxic varieties such as lilies
  • Keep the ASPCA Poison Control number (888-426-4435) saved in your phone before you ever need it
  • If you currently have toxic plants, consider replacing them with ASPCA-verified non-toxic alternatives rather than attempting to manage pet access
  • Photograph all plants in your home for quick identification in the event of an emergency

Your Entire Home Can Be Beautiful and Safe

There is a stunning ASPCA-verified non-toxic alternative for every toxic plant listed on this page. Spider plants trail like pothos. Parlor palms make the same dramatic statement as monstera. Our 150+ variety collection has been entirely curated so you never have to make a choice between beautiful plants and a safe home for your pets.

Browse ASPCA-Verified Non-Toxic Plants

Frequently Asked Questions

Remove any remaining plant material from your pet's mouth. Do not attempt to induce vomiting unless explicitly instructed by a veterinarian, as this can cause additional harm with certain toxins. Contact the ASPCA Animal Poison Control Center at (888) 426-4435 or the Pet Poison Helpline at (855) 764-7661 immediately. If your pet is unconscious, seizing, or having difficulty breathing, go directly to an emergency veterinary clinic without delay. Bring a sample or photograph of the plant for accurate identification.
Yes. Spider plants trail and cascade similarly to pothos. Areca palms and parlor palms create the same dramatic tropical presence as monstera or philodendrons. Peperomia varieties offer interesting textures and shapes. Prayer plants and calatheas provide bold, patterned foliage. Boston ferns, cast iron plants, and many palm varieties fill large spaces beautifully. Root & Reach Botanicals carries 150+ varieties, all ASPCA-verified non-toxic to cats and dogs, so you can shop without researching each plant individually.
This approach carries significant risk and is not recommended. Cats are highly capable climbers and can access positions most owners consider inaccessible. Leaves and flowers fall from elevated plants. Some toxic varieties, including certain lily species, can cause harm through pollen exposure or contaminated water, not only direct ingestion. The safest and most reliable approach is to replace toxic plants with ASPCA-verified non-toxic alternatives rather than managing access to toxic varieties.
Mildly toxic plants typically cause localized irritation and digestive upset, while severely toxic plants can cause organ failure or be life-threatening. However, toxicity outcomes depend heavily on the size of the animal, the amount consumed, and the specific compounds involved. Small pets are at greater risk from all toxicity levels, and animals with pre-existing health conditions may be more vulnerable than healthy adults. All toxic plants should be treated as serious risks and removed from pet households when possible.
The most authoritative source is the ASPCA Animal Poison Control Center's plant databases, available at aspca.org. They maintain separate lists for plants non-toxic to dogs and plants non-toxic to cats, and also maintain toxic plant lists. Always search by scientific name rather than common name for accurate results, since common names are frequently shared by multiple species with different toxicity profiles. The ASPCA databases are the same primary source Root & Reach Botanicals uses to curate our entire non-toxic collection.

Sources and Research

This guide was compiled from authoritative veterinary and toxicological sources. We encourage all pet owners to consult these resources directly.

1. ASPCA Animal Poison Control Center
"Plants Non-Toxic to Dogs" and "Plants Toxic to Dogs" databases.
aspca.org/pet-care/animal-poison-control/dogs-plant-list

2. ASPCA Animal Poison Control Center
"Plants Non-Toxic to Cats" and "Plants Toxic to Cats" databases.
aspca.org/pet-care/animal-poison-control/cats-plant-list

3. Pet Poison Helpline
"Poisonous Plants for Dogs and Cats" toxicity database.
petpoisonhelpline.com/poisons

4. Merck Veterinary Manual
"Plants Poisonous to Animals" veterinary toxicology reference.
merckvetmanual.com/toxicology/poisonous-plants

5. American Veterinary Medical Association
"Household Hazards for Pets" professional guidance resource.
avma.org/resources/pet-owners/petcare/household-hazards