The most suitable temperature for white peony in summer is between 15 ℃ and 25 ℃; do not expose to the sun in the hot sun, and do a good job in shade and ventilation. When the temperature reaches 35 degrees in summer, the white peony will stop growing.
Avoid water accumulation in summer. In summer, watering should follow the principle of "dry through". A lot of meat friends can't bear to see the soil is too dry, so they water it from time to time, which is wrong. White peony can even be watered once a month, and every time it is watered completely. If the soil is wet in summer, it is easy for white peony to rot. Fertilizer can not be too much, about 30 days fertilization can be, fertilizer to phosphorus and potassium thin fertilizer.
The common disease of white peony is black rot. summer is a high incidence period. The roots of plants gradually turn black and rot. Generally, it is easy to be triggered in the environment with high temperature, high humidity and poor ventilation. It is found that the black rot can be removed in the early stage. Spray chlorothalonil, carbendazim and other fungicides on the wound, and then plant in the soil again after natural drying.
When watering, or when it rains, it's best not to let the white peony leaves get wet.
