Peace lily: plant wilting although the soil is moist

What it is likely to be on peace lily

1. Root rot

   Candidate 1very common on this plant

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Root rot

   Checked 2026-08-13

   The consequence of prolonged waterlogging rather than an independent event: water moulds that are present in most soil and compost become active when roots are deprived of air, and colonise tissue that is already dying. The treatment is therefore the watering, not the fungus.

   Points towards it

   • · the compost is wet and the plant is wilting anyway
   • · saucers and cachepots left full are the commonest indoor cause

   Argues against it

   • · the compost is dry, so the plant is simply thirsty. A peace lily collapses when dry and stands up again within the hour — this rules it out entirely.

   Check this next

   Water it thoroughly and come back in an hour. A plant that stands up again was thirsty; one still flat with wet compost has damaged roots, and the next check is to tip it out and look — firm pale roots are healthy, brown soft ones that smell sour are rot.

   What to do now

   Empty the saucer or cachepot and let the compost dry before watering again. If it does not recover, tip it out, cut away any brown soft roots and repot into fresh compost in a pot only slightly larger than what remains.

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Root rot

   Checked 2026-08-13

2. Underwatering

   Candidate 2very common on this plant

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Watering houseplants

   Checked 2026-08-13

   Easier to correct than overwatering and easily confused with it, because a plant short of water and a plant drowning both wilt. The distinguishing observation is not the plant at all — it is the compost, and it takes two seconds to check.

   Points towards it

   • · the compost is dry, which is what this cause requires
   • · these are all houseplants
   • · a plant short of water flags all over at once

   Argues against it

   • · the compost is wet, so the plant is not thirsty — a plant wilting in wet compost has roots that cannot take water up — this rules it out entirely.

   Check this next

   Lift the pot before you do anything else. A pot that is very light for its size is thirsty, and a peace lily in that state stands back up within an hour of a thorough watering — a plant that stays flat after watering has damaged roots instead, and the response is the opposite.

   What to do now

   Water thoroughly until it runs from the base, then check again in an hour. Recovery confirms thirst. No recovery means stop watering entirely and look at the roots, because you are now dealing with the opposite problem.

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Watering houseplants

   Checked 2026-08-13

Narrow it down

This page lists everything at once, which is the right shape for reading and the wrong shape for deciding. The interactive tool asks one question at a time, starting with whichever would separate these causes fastest, and stops as soon as further answers would not help.

Opens with the plant and the symptom already set. Nothing you answer is stored or sent anywhere — the answers live in the address bar and nowhere else.

What this does not cover

These are the causes GrowingHQ holds rules for on peace lily — not every cause there is. Where several problems look alike, the honest answer is often that they cannot be told apart by eye, and a page that named one would be guessing. If none of the above fits, the general plant wilting although the soil is moist page lists causes across all plants, and the Peace lily profile lists the problems it is prone to.