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Plant care

Snake Plant (Mother-in-Law's Tongue) care

Sansevieria trifasciata

Also called Mother-in-Law's Tongue, Saint George's Sword, Viper's Bowstring Hemp.

RHS H1cUSDA 9-11Toxic to petsIndoor 45-120 cm tall indoors

Watering rhythm

2-6weeks

When the soil is completely dry, roughly every 2-6 weeks depending on season and light level

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Light

Low light (north window or shaded room)

Soil

Free-draining potting mix or cactus blend

Humidity

30-50%

Temp

15-30°C

Pet safety

Toxic to pets

Mature size

45-120 cm tall indoors

Care at a glance

Light

Most houseplants sulk in a dim corner. Snake Plant is one of the handful that doesn't. Highly tolerant of low light, though growth is slowest in shady spots. It performs best in bright indirect light and can handle some direct sun in an east-facing window. Avoid intense south-facing afternoon sun that may scorch the leaf tips. The tell that you've pushed even a low-light plant too far is soil that stays wet for a week — the plant has stopped transpiring, which means it's stopped using water, which is one short step from rot.

Watering

Water snake plant when the soil is completely dry, roughly every 2-6 weeks depending on season and light level. Succulent-style plants store water in stem and leaf tissue — they'd rather be slightly thirsty than slightly soggy, and the most common way to kill one is to water it on a fixed weekly calendar instead of by feel. Allow the soil to dry out entirely before watering again. In winter reduce watering to once a month or even less. Overwatering is the primary cause of death in this species. Water at the base and avoid getting water into the leaf rosettes.

Soil and pot

Snake Plant grows best in free-draining potting mix or cactus blend. A standard potting compost mixed with 30% perlite or a ready-made cactus mix works well. Excellent drainage is essential; the roots are prone to rot in consistently moist soil. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Snake Plant sits happiest at around 30-50% humidity and 15-30°C (59-86°F). Highly tolerant of low indoor humidity. Does not require misting and performs well in air-conditioned or centrally heated rooms. If you keep the room above 15 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed snake plant sparingly. Feed once a month in spring and summer with a balanced liquid fertiliser diluted to half strength. Avoid feeding in autumn and winter. Over-fertilising causes soft, floppy growth. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on snake plant in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Root rot — The most common problem; caused by overwatering or waterlogged soil. Allow soil to dry fully between waterings and ensure drainage holes are unblocked.
  • Soft or mushy leaves at the base — A sign of crown rot, usually from water sitting at the base of the leaves. Remove affected leaves and allow the plant to dry out.
  • Brown leaf tips — Often caused by fluoride in tap water, very low humidity, or underwatering. Use filtered water or allow tap water to stand overnight.
  • Mealybugs — Occasionally found in the crevices between leaves; treat with alcohol on a cotton swab or a systemic insecticide.
  • Yellow leaves — Usually a sign of overwatering. Check the roots for rot and adjust the watering schedule.

Companion plants

Snake Plant pairs well with ZZ Plant (Zamioculcas zamiifolia), Pothos (Epipremnum aureum), Cast Iron Plant (Aspidistra elatior), and Spider Plant (Chlorophytum comosum). These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Divide rhizomes when repotting, ensuring each division has roots attached. Leaf cuttings inserted upright into moist sand will also root, though variegated forms revert to green when propagated this way. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Snake Plant is toxic to pets. The ASPCA lists Sansevieria trifasciata as toxic to cats and dogs. It contains saponins that can cause nausea, vomiting, diarrhoea, and drooling if ingested. While rarely life-threatening, it should be kept out of reach of pets. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Snake Plant care — frequently asked questions

What is the common name for Sansevieria trifasciata?

Sansevieria trifasciata is most commonly called Snake Plant, but it is also known as Mother-in-Law's Tongue, Saint George's Sword, Viper's Bowstring Hemp. The names refer to the same species, so care instructions for Snake Plant apply identically to anything sold as Mother-in-Law's Tongue.

How much light does snake plant need?

Snake Plant grows best in low light (north window or shaded room). Highly tolerant of low light, though growth is slowest in shady spots. It performs best in bright indirect light and can handle some direct sun in an east-facing window. Avoid intense south-facing afternoon sun that may scorch the leaf tips.

How often should I water snake plant?

Water snake plant when the soil is completely dry, roughly every 2-6 weeks depending on season and light level. Allow the soil to dry out entirely before watering again. In winter reduce watering to once a month or even less. Overwatering is the primary cause of death in this species. Water at the base and avoid getting water into the leaf rosettes. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is snake plant toxic to cats and dogs?

Snake Plant is toxic to pets. The ASPCA lists Sansevieria trifasciata as toxic to cats and dogs. It contains saponins that can cause nausea, vomiting, diarrhoea, and drooling if ingested. While rarely life-threatening, it should be kept out of reach of pets.

What USDA hardiness zone does snake plant grow in?

Snake Plant is rated for USDA zone 9-11 and RHS hardiness H1c. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Snake Plant deep-dive guides

Every aspect of snake plant care, each with its own calibrated guide:

Featured in these plant shortlists

Snake Plant qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Snake Plant is also known as Mother-in-Law's Tongue, Saint George's Sword, and Viper's Bowstring Hemp.