1、 Sufficient light

The light of Rhododendron changed before and after flowering. When the flower bud first appears, it is necessary to appropriately extend the light time, but after it expands, it is necessary to appropriately reduce the light. Too much light will damage the flowers, so it needs proper shade. Long term lack of light will delay flowering, so you can't keep it indoors all the time

2、 Proper watering

Rhododendron also has a high demand for water during flowering. This is because it blooms a lot and naturally needs more water. Insufficient water will cause the flowers to wilt a little and the petals will fade. When watering, pay attention not to drop on the flowers, which will lead to internal decay and shorten their service life

3、 Temperature control

The temperature during flowering should be kept at about 10-15 ℃ and not lower than 5 ℃ at night. Too high temperature will lead to the reduction of flower buds, and low temperature will lead to non flowering. Therefore, maintaining this temperature can effectively prolong the flowering period

4、 Pest control

Because the soil is wet for a long time, it is easy to cause various diseases and pests. The most common is flower rot, which will shorten the flowering period and lead to further lesions such as decay. The diseased residual flowers should be removed in time and sprayed with ammonium metasen solution for control. It is necessary to spray Omethoate solution to kill red spider, military mating insect and other pests