Is a Snake Plant Poisonous? Safety Facts & Risks

By Priya Sharma · January 23, 2026

Yes, snake plants (Sansevieria) are mildly poisonous to humans and pets if ingested. They contain saponins, natural chemicals that can cause nausea, vomiting, and diarrhea. While serious poisoning is rare, it's important to keep them out of reach of children and pets. This article explores the toxicity of snake plants, symptoms of exposure, safe handling practices, and how to enjoy these popular houseplants responsibly.

Understanding Snake Plant Toxicity

Sometimes called "mother-in-law's tongue," snake plants (Sansevieria trifasciata) are among the most popular indoor plants due to their hardiness and air-purifying qualities. However, they contain compounds that make them toxic when consumed.

What Makes Snake Plants Poisonous?

The primary toxic agents in snake plants are saponins. These natural chemical compounds serve as a defense mechanism in many plants. When chewed or swallowed, saponins can irritate the gastrointestinal tract.

Saponins cause foaming in water and disrupt cell membranes
They are found throughout the plant, especially in the leaves
Toxicity level: mild to moderate
Most dangerous when large quantities are ingested

Symptoms of Snake Plant Poisoning

While snake plants are not considered highly toxic, ingestion can lead to uncomfortable symptoms, particularly in sensitive individuals or small animals.

In Humans

Children are most at risk due to curiosity and tendency to mouth objects. Symptoms usually appear within a few hours of ingestion.

Mouth and throat irritation
Nausea and vomiting
Diarrhea
Swelling of the tongue or lips (rare)

In Pets (Cats and Dogs)

Pets may chew on the leaves out of boredom or curiosity. The ASPCA lists snake plants as toxic to both cats and dogs.

Excessive drooling
Vomiting
Loss of appetite
Depression or lethargy
Diarrhea

Species	Toxicity Level	Common Symptoms	Onset Time	Severity
Humans (adults)	Mild	Nausea, vomiting	1–3 hours	Low
Children	Moderate	Mouth irritation, GI upset	30 min – 2 hours	Medium
Cats	Moderate	Drooling, vomiting	30 min – 2 hours	Medium
Dogs	Moderate	Vomiting, diarrhea	1–2 hours	Medium
Birds	Unknown	Limited data	Unknown	Potential risk

Table data source:1, 2

The data shows that while snake plant toxicity is generally mild in adults, children and pets experience more pronounced symptoms due to smaller body size and higher sensitivity. Onset is typically rapid, within two hours of ingestion. Most cases resolve with supportive care and do not require hospitalization.

Safe Handling and Placement Tips

You don’t need to remove snake plants from your home—just take smart precautions to minimize risk.

For Households with Children

Place plants on high shelves or in rooms that are off-limits to young children
Use protective covers or mesh enclosures around the plant
Educate older children about not touching or tasting houseplants

For Pet Owners

Elevate plants using hanging planters or wall-mounted pots
Use pet deterrent sprays (bitter apple) around the base
Consider placing citrus peels nearby—cats dislike the smell
Monitor pets closely after introducing new plants

First Aid and When to Seek Help

If ingestion occurs, act quickly but calmly.

Rinse the mouth with water to remove plant residue
Give a small amount of milk or water to soothe the stomach (for pets, consult a vet first)
Do not induce vomiting unless directed by a professional
Contact poison control or a veterinarian immediately

In the U.S., call the American Association of Poison Control Centers at 1-800-222-1222. For pets, contact the ASPCA Animal Poison Control Center at 1-888-426-4435.

Are There Non-Toxic Alternatives?

If you're concerned about safety, several non-toxic houseplants offer similar benefits without the risk.

Spider Plant (Chlorophytum comosum): Safe for pets, removes toxins, easy to grow
Parlor Palm (Chamaedorea elegans): Pet-friendly, thrives in low light
Peperomia spp.: Compact, non-toxic, diverse leaf shapes
Boston Fern (Nephrolepis exaltata): Humidifier-like effect, safe for homes with pets

Frequently Asked Questions About Snake Plant Toxicity

Is a snake plant poisonous to cats?

Yes, snake plants are poisonous to cats. They contain saponins that can cause drooling, vomiting, and nausea if ingested. Keep snake plants out of reach of cats or choose pet-safe alternatives like spider plants or parlor palms.

Can snake plants make dogs sick?

Yes, snake plants can make dogs sick if they chew or eat the leaves. Symptoms include vomiting, diarrhea, and drooling. While rarely life-threatening, it's best to prevent access by placing the plant in elevated or enclosed areas.

Are snake plants toxic to humans?

Snake plants are mildly toxic to humans. Ingestion may cause nausea, vomiting, and mouth irritation, especially in children. Skin contact is generally safe, though sensitive individuals may experience minor irritation from the sap.

What should I do if my child eats part of a snake plant?

Rinse their mouth with water, give a small drink of milk or water, and monitor for symptoms. Contact poison control immediately at 1-800-222-1222. Most cases are mild, but professional guidance is essential.

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. The toxicity only becomes a concern if the plant is ingested.