Pines and red plums like plenty of sunshine, but the temperature is too high and the sunshine is too strong in summer. The long-term high temperature and hot sun exposure will cause burns and local water loss of the leaves of pines and red plums, which will cause the leaves to dry and yellow.
The watering principle of songhongmei is to see the basin soil dry and then water it. Every time you water it, you should water it thoroughly.
If the soil is too dry, the leaves will be lack of necessary water, which will also lead to the withered leaves.
Too much fertilizer applied to Prunus mume will burn its roots and cause its leaves to turn yellow.
Soil hardening, salinization and other problems will lead to root damage of Prunus mume, which will lead to yellow leaves of Prunus mume.
In winter, the temperature is too low to be put into the greenhouse for maintenance in time, which leads to frostbite of pines and red plum, and is also one of the causes of yellow leaves of pines and red plum.
In summer, when the weather is hot, you can put the pine and red plum in a cool place to absorb the light scattered by the sun.
The basin soil should be kept moist during the growth period of red plum. In the high temperature weather in summer, water mist can be sprayed around the red plum to increase the air humidity.
In the growth period of pine and red plum, apply the thin liquid fertilizer once every 1 to 2 months, water properly at ordinary times, and moisten the basin soil.
Songhongmei is suitable for growing in the micro acid soil which is rich in humus, loose and fertile, and well drained.
When the soil is too alkaline, 5% ferrous sulfate solution should be used to improve the soil, and the pH value should be 6.5-7.0.
In winter, the temperature above - 1 ℃ must be maintained. Therefore, in the north, only potted plants can be used for viewing. In the south, I can plant directly in the open.
