The requirement of red plum on soil is not strict, but it grows best in the slightly acid soil which is rich in humus, loose and fertile, and well drained.
Pines and red plums like humid environments and can withstand drought. In normal maintenance, as long as the soil is kept moist, pay attention to drainage in rainy season to avoid water accumulation in the soil.
Songhongmei likes a cool, humid and sunny environment. The suitable growth temperature is 18 ℃ - 25 ℃, and the temperature above - 1 ℃ should be maintained in winter.
In the growth period of the red plum, a thin liquid fertilizer was applied every 1 to 2 months.
Pine, red and plum are afraid of high temperature and sun exposure, so in addition to the summer need to be placed in shade, shade or cool and ventilated place for maintenance, other seasons should be given sufficient sunshine.
Pay attention to the frequency of watering in winter, keep the soil slightly wet and slightly dry, not too wet.
It needs heat preservation in winter and can be planted in the south side of the building for microclimate protection.
In terms of terrain selection, the site with smooth drainage of high slope and high platform is suitable, and depressions are not allowed. In winter, indoor potted plants are the best choice for maintenance in North China.
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.
Every year after flowering, pruning is carried out carefully to achieve the purpose of dwarfing the crown of the tree, maintaining the beautiful shape of the tree, and promoting the plant to sprout new flowering branches.
When pruning, it should be noted that except some branches that affect the plant type can be completely cut off, other branches cannot be completely cut off, generally cutting half or two-thirds can be done.
