Why is my plant wilting even though the soil is wet?
A wilting plant in dry soil needs water. A wilting plant in wet soil has a blocked or destroyed water supply, and that is a much shorter and much more serious list. Check the soil first — it changes the diagnosis completely.
The one observation that decides it
Cut a low stem across and lift the plant. Brown staining in the cut wood is a vascular wilt — fusarium or verticillium — and it is in the soil, not on the leaves. Sticky white strands drawn out of the cut are bacterial wilt. Roots that are brown, mushy or missing point to root rot, waterlogging or a soil pest; club-shaped swollen roots are clubroot and grubs at the root ball are vine weevil. Wilting only in midday heat that recovers overnight is a root that cannot keep up, not a dead one.
Start from the plant in front of you
14 things it could be
Ordered by how much they can cost you — if the first entry fits what you can see, rule it out before considering the milder ones.
Rapid wilting of individual leaves then whole vines despite moist soil; cut stems ooze sticky white strands; no recovery overnight. A cut stem dipped in water releases milky threads.
Conditions: 25–37°C · humidity ≥70%First move: Remove affected material nowYellowing and wilting often on one side of the plant or one branch, progressing upward; brown discoloration inside the lower stem when cut; eventual collapse despite moist soil.
Conditions: 25–34°C · humidity ≥60%First move: Remove affected material nowLeaves yellow and die back from the tips while the plant is still growing, and the whole plant lifts out easily. The base of the bulb is covered in a dense white, fluffy mat studded with poppy-seed-sized black sclerotia.
Conditions: 10–24°C · humidity ≥80%First move: Remove affected material nowLeaves are small, pale and sparse, and the plant wilts in warm weather despite wet soil. Whole branches die back one at a time. Cut the bark at the base and the tissue underneath is brown or reddish instead of white-green, often with a sharp line between healthy and dead.
Conditions: 15–30°C · humidity ≥90% · wet leaves / rainFirst move: Remove affected material nowSeen on: Asparagus, Blueberries, Rosemary, Thyme, Oregano, Sage and 1 more
Young plants wilt in sunshine, recover overnight, then wilt worse each day until they die. Leaves take on a blue-grey cast. Pull a failing plant and the roots are ragged stumps riddled with white maggots.
Conditions: 10–25°CFirst move: Fix the cause, not the leafSeen on: Cabbage, Radishes, Broccoli, Cauliflower
Stunting, wilting in midday heat, and yellowing of older leaves above ground; swollen, distorted club-shaped roots below ground that rot and smell.
Conditions: 12–27°C · humidity ≥70% · wet leaves / rainFirst move: Fix the cause, not the leafSeen on: Cabbage, Radishes, Kale, Broccoli, Cauliflower, Brussels sprouts and 1 more
Leaves on one cane wilt and die while neighbouring canes look fine. The base of the cane turns dark brown and brittle, and the bark cracks and peels away to show grey fungal growth beneath. Affected canes snap off cleanly at the base.
Conditions: 12–26°C · humidity ≥85% · wet leaves / rainFirst move: Treat, then re-check in 5–7 daysSeen on: Raspberries
Plants wilt in the heat of the day despite adequate water, grow slowly and yellow between the veins. Lifted roots carry irregular swellings and galls fused into the root tissue — unlike legume nitrogen nodules, these cannot be rubbed off.
Conditions: 18–30°CFirst move: Fix the cause, not the leafSeen on: Carrots
Sudden wilting and yellowing; a white fan of fungal threads at the soil line studded with tan, mustard-seed-sized resting bodies; rapid plant collapse.
Conditions: 25–35°C · humidity ≥80% · wet leaves / rainFirst move: Treat, then re-check in 5–7 daysV-shaped yellow wedges at leaf margins, wilting during the heat of the day, and tan-to-brown streaking in the wood when a stem is cut. Often progresses slowly over a season.
Conditions: 18–27°C · humidity ≥60%First move: Remove affected material nowSeen on: Aubergines
Distinctive U-shaped notches bitten out of leaf edges of heuchera, bergenia, rhododendron and strawberry. Later, a plant wilts suddenly and lifts out of its pot with no roots at all, revealing cream C-shaped grubs with brown heads in the compost.
Conditions: 5–25°CFirst move: Treat, then re-check in 5–7 daysSeen on: Strawberries, Hydrangeas
Wilting despite obviously wet soil, yellowing of the lower leaves, and leaf drop. Stems may show soft brown rot at the base, and the soil smells sour or of rotten eggs. Growth stops entirely and the plant becomes an easy target for Phytophthora.
Conditions: humidity ≥90% · wet leaves / rainFirst move: Fix the cause, not the leafWater-soaked stem and pod rot covered in dense cottony white mould, later embedded with hard black pellets (sclerotia); sudden wilting of branches above the rot.
Conditions: 10–24°C · humidity ≥90% · wet leaves / rainFirst move: Remove affected material nowSeen on: Lettuce, Beans, Sunflowers
Wilting and yellow speckling of leaves that progress to brown and crisp; bronze egg clusters in leaf-vein angles; grey-brown adults and pale green nymphs clustered at the plant base.
Conditions: 21–35°CFirst move: Treat, then re-check in 5–7 days