How to Overwinter Vanda

Suitable temperature

Vanda orchids require a temperature of above 15 °C in winter. If you do not take precautions against cold when the temperature is below 8 ℃, frost damage may occur. In winter, we should also pay attention to diseases and pests in the greenhouse. It is more appropriate to control the room temperature at around 25 ℃ during the day and around 16 ℃ at night. Because Vanda is a tropical flower, the temperature usually starts to rise at 15 ℃. Maintain this temperature as much as possible. Combined with suitable light, Vanda orchids can grow even in the cold winter. Greenhouse temperature control in the north basically takes place in May and June .

70% humidity

Vanda orchids should be watered about once every three days in winter. Stop watering during severe cold weather, and it is best to water thoroughly at one time. Wait until the planting material is dry before watering. The air humidity can be kept at around 70% . Watering should be done at noon, and the soil in the pot should be slightly moist, just dry but not dry.

Ventilation

Vanda orchids are prone to disease if they are not well ventilated, so proper ventilation is very necessary. In winter, when the temperature exceeds 15 °C , windows must be opened for ventilation, especially from 11 a.m. to 3 p.m., to prevent the Vanda orchid from being too hot.