You can cut off the withered stems. Then put it in a well-ventilated and sunny place for maintenance, and keep the basin soil slightly wet. Lily is a bulb flower, which is drought-tolerant, but not moisture-tolerant. If the pot soil is too wet, it is easy to cause bulb rot.
There is no need to fertilize when the temperature is low in winter.
In winter, it should be placed in a warm and bright place indoors, and the indoor temperature should be kept above 5℃ to avoid freezing plants. When the temperature is ok at noon, it should be ventilated in time.
Indoor temperature should not be too high, too high will make lily end its dormancy period ahead of schedule.
Plants are dormant in winter and do not need fertilization. Pay attention to watering and keep the soil moist.
Through our introduction, I believe that everyone has a deeper understanding of how to raise lilies in winter in order to survive the winter safely.