Guides · Dying plant · Autumn

Is my plant dying, or just sulking?

Most houseplants that look like a dying plant are not. They are dropping leaves after a move, going quiet for the winter, or reacting to one bad fortnight of watering, and they come back. A few really are on the way out, and for those the next week decides it. Two checks tell you which you have. Then the three things that actually kill plants indoors, the rescue in the right order, and how to know when to stop.

By Sabz

A dracaena by a window in low autumn sun, its leaf tips browning and some leaves hanging, the glass misted behind it.
Browning tips, leaves hanging, a cold window behind. It looks worse than it is: the stem is green and the roots are firm, and that is the whole difference.
Check 1 · The stem
Scratch it with a nail. Green underneath is alive. Brown and dry all the way down is not
Check 2 · The roots
Pale and firm means a plant that can recover. Brown, soft and smelling sour means act today
The rule
Leaves lie. A plant with no leaves and a green stem is alive; a plant with green leaves and rotten roots is not
01

Dying, dormant, or sulking

Three states get called dying, and only one of them is.

Sulking if

  • it dropped leaves within a week or two of being moved, repotted, or bought
  • the stem is green under the skin and firm
  • the soil is neither sodden nor bone dry
  • it is autumn or winter and growth has simply stopped

Dying if

  • the base of the stem is soft, dark, or smells sour
  • the roots are brown and slip off when touched
  • the stem snaps dry and brown, with no green inside
  • every leaf has gone soft or crisp at once, top and bottom

Sulking is a plant reacting to a change: less light in the new room, a draught by the door, a repot that disturbed the roots. It stops when the plant settles, usually inside a month, and the only thing to do is not to react to it. Dormant is a plant doing what the season asks; a fig or a hoya that stops growing in November is fine. Dying is the third column, and it is nearly always the roots.

02

Two checks for life

Scratch the stem
Start near the top and scratch a sliver of skin off with a fingernail. Green and moist underneath is living tissue. If it is brown and dry, move down and try again, lower each time. Wherever you find green, everything below it is alive and the plant can regrow from there. If you reach the soil and find no green, the top is gone; the roots may still not be.
Look at the roots
Tip the plant out over newspaper. Healthy roots are pale, firm and hold the compost together. Rotten ones are brown to black, soft, and slide off the core when pulled, and the compost is heavy and smells sour. Some rot with plenty of firm root left is a plant you can save this week. All rot, with a soft base, is a plant you cannot; take cuttings from any green top growth instead.

Do both, in that order, before you do anything else. A watering can cannot help a plant with no roots, and a rescue that starts with the leaves treats the part that does not matter.

03

What actually kills houseplants

Drowning, slowly

By a distance the commonest cause. Watered before the soil dried, week after week, until the roots ran out of air and rotted. It is slow, it looks like thirst, and it usually gets more water. If the soil is damp and the plant is collapsing, this is it. The overwatering guide covers the recovery.

Cold, suddenly

A tropical plant against a single-glazed window on the first frosty night, or in the path of the front door, can lose every leaf overnight. It looks dramatic and is often survivable: the stem is green, the roots are fine, and it regrows once it is warm. Move it, and wait.

Drought, then a flood

Forgotten for a month, the compost shrinks from the pot and repels water; the rescue watering runs straight down the gap and out. The plant crisps. This one is saved by soaking the whole pot in a basin for twenty minutes, then draining, then leaving it alone. Not by watering more often.

Pests and fungus rarely kill an established houseplant on their own. They finish off one already weakened by the three above.

04

The rescue, in order

1. Fix the roots first
If there is rot, cut every brown, soft root back to firm pale tissue with clean scissors. Shake off the old compost. Repot into fresh, free-draining compost in a clean pot only as big as the roots that are left, often a size smaller than before. Water once, lightly.
2. Cut the top back to living wood
Remove everything above the last green scratch. Dead stem does not come back and rots. Fewer leaves also means less for damaged roots to support.
3. Put it somewhere bright, warm and still
Within a metre of a window, out of direct midday sun, off the radiator, away from doors. Light and warmth are what let a plant rebuild.
4. Then leave it alone
No feeding: damaged roots cannot use it and the salts burn. No misting. No moving it again. Water only when the top few centimetres are dry, which for a plant with few leaves may be a fortnight or more.
5. Judge it in a month, by new growth
A new leaf, a swelling bud, a pale root tip at the drainage hole. Any of those means it is coming back, however bare it looks. Nothing after six weeks in good light, with a stem that has gone brown to the soil, means it is time.
05

What not to do

  • Do not water a collapsing plant without checking the soil. If it is damp, water is the cause.
  • Do not feed it to give it strength. Fertiliser is for plants that are growing, and this one is not.
  • Do not move it to a bigger pot. More compost stays wet longer around fewer roots.
  • Do not keep it on the windowsill above the radiator through the winter and hope. Dry heat below and cold glass behind is the worst spot in the house.
  • Do not give up on a green stem. Plants regrow from very little, slowly, and the bare weeks are normal.

This page names categories, not products, on purpose. Availability and approval change; what works does not.

06

When to let go

A stem that is brown and dry to the soil, roots that are entirely gone, and no new growth after six weeks in good light: that plant has finished. It is not a failure. Houseplants are living things in a climate they did not evolve for, and some do not make it through a British winter however well they are kept. Take a cutting if any green tip remains, keep the pot, and start again with something that suits the room it will live in.

07

Common questions

How do I know if my plant is dead or dormant?

Scratch a stem with a fingernail: green underneath means alive. Bend a thin stem: it should flex, not snap dry. Look at the roots: firm and pale means alive even if every leaf has gone. A cyclamen, an orchid that has finished flowering, or an amaryllis can look dead for weeks and be perfectly well.

Can a dying plant be saved?

Often, if it still passes the scratch or root test. Find the one cause — nearly always water, light or roots — and fix that alone; the plant needs a stable few weeks more than it needs attention. If the roots are all soft and the stem is mush to the base, take cuttings from any healthy top and let the rest go.

Why is my plant dying even though I look after it?

Because looking after it usually means watering it, and watering on a fixed day is the commonest way a houseplant dies. The other quiet killers are a move to a colder or darker spot, a pot with no drainage hole, and a plant that has outgrown its compost and dries out in a day. Look for what changed in the month before it started.

Should I repot a dying plant?

Only if the roots are the problem — rotting, or so crowded there is no compost left. Otherwise no: repotting is a shock, and a struggling plant recovers faster left where it is with the watering corrected. If you must, go one size up, fresh compost, drainage hole.

How long does a plant take to recover?

Weeks, not days. Expect no visible change for two or three weeks, then new growth from the centre or the base; that is the sign it has turned. Leaves already yellow or brown will not recover — judge the plant by what is new, not by what is old.

08

Plants this often affects

Species in the Sabz catalogue whose common problems include this one. Each page has the watering interval and the toxicity verdict for cats and dogs.

All 265 plants in the library →

09

Still not sure?

If the base of the stem is soft or the compost smells sour, the plant is past sulking and into root rot, which has its own page and its own rescue. The RHS's guide to helping a poorly houseplant covers the same ground from the other side.

Sabz’s Check-up will not tell you a plant is dead; no photo can. What it does is weigh what you can see against what you have logged: how often it was watered, when it was moved, what it is, and say which of the three killers it most likely is and what to do this week, with the plan for a self-watering pot if that is what it lives in.

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