Environment
Temperature stress or shock
Cold drafts, heating vents, or a sudden change in location can cause a houseplant to drop leaves quickly, even when watering and light are otherwise fine.
How to confirm it
- Check whether the plant sits near a drafty window, exterior door, or heating or cooling vent.
- Note whether the drop followed a recent move, temperature swing, or seasonal change.
- Rule out under- or overwatering first, since both can also cause leaf drop.
Next Steps
Fixes connected to this cause
Stabilize temperature and location
Most sudden leaf drop stops once the plant is moved away from the specific stress that caused it, without needing any product.