Are Snake Plants Toxic? Safety Guide for Pets & Kids

By Jennifer Lee · September 14, 2025

Yes, snake plants (Sansevieria) are toxic to cats, dogs, and humans if ingested. They contain saponins, natural chemicals that can cause nausea, vomiting, and diarrhea. While serious poisoning is rare, it's best to keep this popular houseplant out of reach of pets and children.

Understanding Snake Plant Toxicity

Sometimes praised for their air-purifying qualities and resilience, snake plants (Sansevieria trifasciata) are a staple in modern indoor gardening. However, their popularity often overshadows an important safety concern: they are mildly toxic when consumed.

Why Are Snake Plants Toxic?

The toxicity stems from saponins, bioactive compounds found throughout the plant, especially in the leaves. Saponins act as a natural defense mechanism against pests and fungi but can irritate the gastrointestinal tract in mammals when ingested.

Saponins disrupt cell membranes in the digestive system
Effects are typically mild but uncomfortable
Toxicity level: Mild to moderate depending on amount consumed
No known fatalities in humans or pets from ingestion alone

Symptoms of Snake Plant Poisoning

Most cases of poisoning occur in curious pets or young children who chew on the tough, upright leaves. Symptoms usually appear within a few hours of ingestion.

In Pets (Cats and Dogs)

According to the American Society for the Prevention of Cruelty to Animals (ASPCA), snake plants are listed as toxic to both cats and dogs. Common signs include:

Vomiting
Diarrhea
Excessive drooling
Lethargy
Loss of appetite

In Humans

While adult humans are unlikely to eat large amounts, children may be at risk. Symptoms in humans are similar and generally limited to:

Oral irritation or swelling
Nausea
Stomach pain
Vomiting

Species	Toxic Component	Common Symptoms	Severity Level	Treatment Approach
Cats	Saponins	Vomiting, drooling, lethargy	Moderate	Supportive care, fluids
Dogs	Saponins	Vomiting, diarrhea, nausea	Mild to Moderate	Induce vomiting (if recent), vet monitoring
Humans (children)	Saponins	Nausea, oral irritation	Mild	Rinse mouth, hydration
Birds	Unknown (assumed)	GI upset, possible respiratory distress	Potentially Severe	Immediate veterinary attention

Table data source:1, 2

The data shows that while all listed species are affected by snake plant ingestion, severity varies significantly. Cats and dogs experience moderate gastrointestinal reactions, whereas birds may face more serious consequences due to their sensitive respiratory systems. In all cases, early intervention improves outcomes.

How to Safely Keep Snake Plants at Home

Despite their toxicity, snake plants remain safe for most households with proper precautions. Their low maintenance and air-purifying benefits make them valuable additions—when placed strategically.

Preventative Measures

Elevate the plant: Use tall stands or hanging pots out of pet and child reach
Use barriers: Place in rooms with closed doors or use baby gates
Train pets: Discourage chewing behavior with positive reinforcement
Choose alternatives: Consider non-toxic options like spider plants or parlor palms if concerns persist

What to Do If Ingestion Occurs

Immediate action can minimize discomfort and prevent complications.

For Pets

Contact your veterinarian or the ASPCA Animal Poison Control Center (APCC) immediately. Do not induce vomiting unless instructed. Have the plant’s scientific name ready: Sansevieria trifasciata.

For Humans

Rinse the mouth thoroughly and drink water or milk to dilute toxins. For children, call Poison Help at 1-800-222-1222 (U.S.) or your local poison control center. Bring a leaf sample if seeking medical help.

Common Questions About Snake Plant Toxicity

Are snake plants poisonous to cats?

Yes, snake plants are toxic to cats. Ingestion can cause vomiting, diarrhea, and drooling due to saponins in the leaves. While rarely fatal, it’s important to keep the plant out of reach.

Can dogs get sick from eating snake plant leaves?

Yes, dogs can become ill after chewing or swallowing parts of a snake plant. Symptoms include nausea, vomiting, and diarrhea. Most cases are mild, but veterinary consultation is recommended.

Is snake plant toxic to humans?

Snake plants are mildly toxic to humans, especially children. Chewing the leaves may cause oral irritation, nausea, or stomach upset. Serious poisoning is extremely rare.

Are there non-toxic alternatives to snake plants?

Yes, several pet-safe houseplants offer similar benefits, including the spider plant (Chlorophytum comosum), parlor palm (Chamaedorea elegans), and cast iron plant (Aspidistra elatior).

Do snake plants release toxins into the air?

No, snake plants do not release harmful toxins into the air. On the contrary, they improve indoor air quality by absorbing pollutants like benzene and formaldehyde, according to NASA’s Clean Air Study.