For Rhododendron hybridum occidentalis, the watering time can be in the morning or at night, especially in summer, but not at noon. Because the surrounding temperature is too high, too cold watering will cause damage to the roots and easily lead to death.
The pot soil can be watered after it dries completely. You can take the water out first, put it in the external environment to maintain a considerable water temperature, and then slowly pour the water down along the edge of the pot. It can't be poured too fast to avoid splashing out. Slow pouring can also make the root fully absorb the water.
The supplement of water quantity must be appropriate to ensure that it can be fully poured, but it is not allowed to accumulate water in the flowerpot to prevent the occurrence of rot, or too little water to prevent the occurrence of half water. During the growth period, the amount of water can be increased moderately, and during the slow growth period, the amount of water can be reduced or suspended.
In the general stage of growth, i.e. in spring and autumn, about 3 days of secondary water supply can be satisfied. New buds are sprouting in summer, and the temperature is high and evaporation is strong, so it needs to be watered 1-2 times a day. After October, the frequency of water application can be gradually reduced.