1、 Temperature

The temperature is low in winter. It is necessary to ensure that the temperature is about 10-15 degrees. It is also acceptable to have a low temperature above 0 degrees for a short time, but it cannot be low for a long time, otherwise the yellow leaves will be frostbitten. Before cooling in early winter, the plants should be taken to indoor maintenance in time, and sufficient ventilation conditions should be ensured. In fact, it is difficult to achieve ventilation in winter. We should try our best to create an appropriately ventilated environment. If conditions permit, we can add some small fans as adjustments. During ventilation, avoid direct contact with the cold air blown into the window from outside to avoid freezing damage

2、 Illumination

In winter, it is necessary to ensure sufficient scattered light irradiation, and the plants cannot be directly exposed to the sun for a long time, otherwise the leaves will turn yellow and affect the viewing effect. They can be placed in the indoor living room

3、 Water and fertilizer

In winter, topdressing should not be too thick or excessive to avoid fertilizer damage. It is suggested to increase phosphorus and potassium fertilizer and control nitrogen fertilizer, which is more conducive to the breeding of flower buds and the promotion of flowering, and is also helpful for the coming out of the room in spring. When watering, do not dry or pour, and conduct appropriate water control

4、 Diseases and insect pests

If the indoor ventilation is not good, it is prone to diseases and insect pests. Generally, it is sprayed with protective bactericide once a month. Before entering and leaving the room, we can spray Bordeaux liquid on orchids to prevent diseases. For scale insects, once they occur, they can be removed in time