Snake Plant Care: The Only Houseplant That Dies From Kindness

If you have killed a snake plant, you almost certainly loved it too much.

This is a plant from dry, rocky parts of West Africa. It stores water in thick upright leaves and it is built for long droughts. Nearly every problem people bring to it comes from watering it on the same schedule as a fern.

Water: less than you think, then less again

Let the soil dry out completely, all the way through, then water thoroughly and leave it alone.

In practice that is roughly every two to four weeks in summer, and as little as every six to eight weeks in winter. Some people water theirs twice between October and March and it is perfectly happy.

Check with a finger pushed right down, or by lifting the pot. If there is any dampness at depth, wait. When in doubt, wait another week. A snake plant recovers from a fortnight of thirst without comment. It does not recover from rot.

Water at the soil, not into the crown where the leaves meet. Water sitting in the crown rots it from the middle out.

Light: more tolerant than almost anything

It will survive a dim hallway and it will thrive in a bright window. Bright indirect is the sweet spot, where growth is reasonably quick and the markings stay strong.

In deep shade it survives but barely grows, and variegated types such as Laurentii, with the yellow edges, will fade toward plain green because the yellow parts do not photosynthesise.

Direct hot afternoon sun can bleach it, so move it into strong light gradually rather than all at once.

Reading the symptoms

1. Leaves yellow, soft and mushy at the base, falling over. Overwatering and root rot. The most common problem by a very wide margin.Too much water
2. Leaves wrinkled, curling inward, slightly leathery but firm. Thirst. Water it, and it plumps back over a few days.Too little water
3. Brown crispy tips. Usually inconsistent watering or, less often, mineral buildup from tap water. Trim with clean scissors following the leaf shape.Watering rhythm
4. Leaves flopping outward from the centre. Too little light, or a pot too large, or both. Snake plants stay upright when they get decent light.Light
5. Pale washed out colour and lost variegation. Not enough light for a variegated variety.Light
6. White cottony fluff in the crevices. Mealybugs. Dab with a cotton bud dipped in rubbing alcohol, repeat every five days.Pest
7. Not growing at all for months. Normal in winter. Also normal if it is pot bound, which it likes.Usually fine

Pot and soil

Use a fast draining mix. Cactus compost, or ordinary potting mix cut roughly half and half with perlite or coarse grit. Standard compost alone holds too much water for too long.

Terracotta is ideal because it breathes and dries roughly twice as fast as plastic or glazed ceramic. If you overwater by instinct, terracotta will quietly save you.

A drainage hole is not optional. And keep the pot on the small side: snake plants like being pot bound, they stay more upright in a snug pot, and a large pot holds a mass of wet soil the roots cannot use.

Repot every three to five years, or when roots start pushing the plant up out of the pot or cracking a plastic one, which they genuinely will.

Propagating, and one thing to watch

Two ways.

Division. Tip the plant out, separate the underground rhizomes with a clean knife so each piece has roots and at least one leaf, and pot them separately. This is the reliable method, and it is the only one that keeps variegation.

Leaf cuttings. Cut a leaf into 5 to 8cm sections, keeping track of which end was down, let them callus for a couple of days, then stand them right way up in dry mix. Roots take several weeks and a new shoot takes months.

The catch: leaf cuttings from a variegated snake plant come back plain green. The yellow edge is a chimeral trait that does not carry through leaf propagation. If you want to keep the stripes, divide instead.

Feeding and the pet question

Feed at half strength once or twice across spring and summer. Nothing in winter. It genuinely does not need much, and overfeeding does more harm than skipping it.

Snake plants contain saponins and are toxic to cats and dogs. Chewing causes drooling, vomiting and diarrhoea. Not usually dangerous, but the upright leaves are exactly the kind of thing a cat bats at, so give it some thought before choosing a low shelf.

One more thing worth correcting, since it appears in nearly every listing: the claim that snake plants purify indoor air comes from a 1989 NASA experiment run in sealed chambers, and it does not transfer to a ventilated room. Buy it because it survives a dark hallway and eight weeks of neglect, which is true and considerably more useful.