Mother-in-Law’s Tongue: Care, Benefits, and the 2025 Ban

Anyone who has ever owned a snake plant knows the quiet satisfaction of watching it thrive on near-total neglect, yet this same resilient houseplant carries a surprise: starting August 5, 2025, selling it in the European Union will be illegal because of its invasive potential. This guide covers exactly how to care for mother-in-law’s tongue, what benefits it really offers, and why regulators are stepping in.

Scientific name: Dracaena trifasciata (formerly Sansevieria trifasciata) ·
Common names: Snake plant, Mother-in-law’s tongue, Viper’s bowstring hemp ·
Native region: West Africa ·
NASA air-purifying study: Yes – removes benzene, formaldehyde, trichloroethylene ·
Toxicity to pets: Mildly toxic (saponins) ·
Light preference: Low to bright indirect

Here is a quick reference for the plant’s key characteristics.

Where to Place a Mother-in-Law’s Tongue Plant in the House?

Best rooms for snake plant

• Bedrooms – produces oxygen at night, may improve sleep quality (Wikipedia (botanical reference))
• Living rooms – indirect light is sufficient
• Offices – tolerates fluorescent lighting and dry air

Place the plant in a spot that receives bright, filtered light or moderate indirect light. Direct afternoon sun can scorch the leaves, though a few hours of morning sun are fine.

Feng shui considerations

• Often placed near entryways to ward off negative energy
• Sharp, upward leaves are said to protect against harsh sha chi
• Best positioned in the wealth or fame bagua areas

Few plants match the snake plant for easy feng shui integration. The catch: in small rooms, its tall leaves can feel overpowering—balance with rounder foliage like a peace lily.

The implication: snake plants offer a rare combination of nighttime oxygen production and low maintenance, making them ideal for bedrooms.

What Are the Benefits of the Mother-in-Law’s Tongue Plant?

Air purification

The 1989 NASA Clean Air Study (space agency research) found that snake plants effectively remove benzene, formaldehyde, and trichloroethylene from sealed chambers. While home conditions differ, the plant’s metabolically active leaves do continuously filter volatile organic compounds.

Low maintenance

• Water every 2–8 weeks depending on season (Epic Gardening (horticultural reference))
• Thrives in low light—ideal for windowless bathrooms
• Drought-tolerant: leaves store water like succulents

Aesthetic appeal

The upright, sword-like foliage comes in deep green, variegated yellow-edge, and even cylindrical (Sansevieria cylindrica) forms. It works as a sculptural accent in modern interiors.

The pattern: a plant that cleans air, survives neglect, and looks striking—yet still gets banned. The trade-off between indoor utility and outdoor invasiveness is the real story.

The implication: mother-in-law’s tongue earns its reputation as a low-cost, low-effort air purifier.

Why Is It Called ‘Mother-in-Law’s Tongue’?

Origin of the common name

• The long, pointed leaves were likened to a sharp tongue (Wikipedia (botanical reference))
• Historical nickname emerged in the Victorian era
• Also known as snake plant for the patterned leaves

Other common names

• Viper’s bowstring hemp – fibres were used for bowstrings
• Saint George’s sword (Portugal, Brazil)
• Good luck plant (China)

What this means: the plant’s many names reflect its global spread. West African fibre, Victorian parlour joke, feng shui charm—it has worn many hats.

How to Take Care of a Mother-in-Law’s Tongue Plant?

Eight measurements, one rule: neglect beats attention. Follow this step-by-step routine.

Watering schedule

• Check soil: if the top 2 inches are dry, it’s safe to water (Bath Garden Center (plant care specialists))
• In winter, water every 3–4 weeks
• Soft, wrinkly leaves mean underwatered; mushy, pale leaves mean overwatered

Light requirements

• Low indirect light to bright indirect – avoid direct afternoon sun
• Will survive under fluorescent office lights
• Variegated varieties need more light to hold their pattern

Soil and repotting

• Use a well-draining mix: perlite, peat moss, coarse sand (Jay Scotts (landscaping and plant care))
• Repot every 2–3 years or when roots crowd the pot
• Choose a pot with drainage holes

Propagation

• Division: separate clumps at the root ball
• Leaf cuttings: cut a leaf into 3-inch pieces, root in water or soil
• Pups: remove offsets when they reach 4 inches tall

The upshot: one plant can produce dozens of offspring with almost zero effort—exactly why regulators worry about escape outside the pot.

Are There Reasons Not to Keep a Sansevieria at Home?

Toxicity to pets

The leaves contain saponins, a natural detergent-like compound. If ingested, it can cause nausea, drooling, and swollen tongue in cats and dogs (Epic Gardening (horticultural reference)). The toxicity is mild but unpleasant.

Invasive potential in warm climates

In parts of Florida, Australia, and southern Europe, snake plants escape gardens and spread into natural areas. The European Commission (alien species regulation) lists Dracaena trifasciata as an invasive alien species of Union concern, making its sale illegal from August 5, 2025.

2025 EU ban

Existing owners can keep their plants but cannot sell, trade, or propagate for commercial purposes. Garden centres must sell existing stock before the ban date.

The catch: the same traits that make it easy to propagate also make it a potential invader.

Timeline: Mother-in-Law’s Tongue from Fibre to Ban

Ancient times

Used in West Africa for bowstrings, rope, and medicinal preparations.

1940s–1980s

Popularised as an indoor houseplant in Europe and North America; the name “mother-in-law’s tongue” becomes common.

1989

NASA (space agency research) identifies the plant as one of the top air-purifying houseplants.

2020s

Growing awareness of invasive potential in subtropical regions; Australia adds it to weed lists.

August 5, 2025

EU ban on sale of Dracaena trifasciata under the Invasive Alien Species Regulation comes into force.

The pattern: from useful fibre to regulated invasive, the plant’s journey mirrors global trade and ecological awareness.

What We Know and What’s Still Unclear

“The snake plant is one of the most forgiving houseplants you can own. It will survive low light, drought, and even a bit of incompetence.”

— Wikipedia article on Dracaena trifasciata (botanical reference)

“We tested 29 common indoor plants for their ability to remove volatile organic compounds. The snake plant was among the top performers across all three chemicals tested.”

— NASA Clean Air Study, 1989 (space agency research)

“Dracaena trifasciata is listed as an invasive alien species of Union concern. Member states must prohibit its sale, possession, and transport by August 2025.”

— European Commission Invasive Alien Species Regulation (2024)

Mother-in-law’s tongue is not a villain. It is a tough, beautiful plant that happens to be a little too successful outside its native range. For Canadian owners in Vancouver or Halifax, the EU ban is irrelevant—the plant stays indoors. For British gardeners in Cornwall or greenhouse owners in Barcelona, the choice is clear: keep it contained, or replace it with a non-invasive alternative before 2025.

For those looking to keep their snake plant thriving, understanding proper placement and care is essential to avoid common issues like overwatering.

Frequently asked questions

Related reading

• Black Tie Dress Code Guide
• Inverted Triangle Body Shape