A wilted houseplant does not always need more water. It can droop from dry potting mix, waterlogged roots, heat, cold, root damage, or recent root loss. Before watering, feel the potting mix and look at whether stems and leaves are soft, dry, or yellowing.
Check soil moisture before adding water
Feel into the upper potting mix as appropriate for the plant. If it is dry and the pot feels light, watering may be needed; if it is saturated and heavy, adding more water can worsen low oxygen around the roots.
Use leaves and stems to separate dehydration from rot
Limp but still flexible leaves with dry mix fit dehydration; soft stems, sour odor, or dark roots with wet mix point toward rot. Those two situations require opposite responses.
Review recent light and temperature changes
New direct sun, hot air from a vent, a cold window, or a recent move can change water loss and stress the plant. Correct the environment before changing fertilizer or repotting impulsively.
If it does not recover, inspect roots and drainage
A pot without drainage, severely bound roots, or broken-down mix can keep the problem going. If roots are black and soft, remove only clearly damaged tissue with clean tools and use suitable mix; a severely damaged plant may not recover.
Sources
- University of Minnesota Extension — Houseplants — Houseplant care, common symptoms, and management.