Hemp leaf Spiraea prefers fertile soil, so when planting, we should select the soil with loose soil and good water permeability. In this way, its roots can get better protection and nutrition needs. In addition, we need to find those soil with great viscosity, and then add some fine sand or small stones to make the soil better. Don't choose the soil that is especially sticky and has wet soil in it. It's bad for the roots, so it won't survive easily. Sandy soil is the best.
The requirement of hemp leaf Spiraea for sunshine is very high. To ensure sufficient sunshine and good ventilation, it is generally the best to grow and develop under the temperature of 25 ° or so. Although it can be exposed to the ground for winter, if the temperature is lower than - 25 ° below, freezing damage will occur, and it may also lead to death. Therefore, it is necessary to control the temperature to meet its needs for temperature
Before planting, make sure there is enough base fertilizer and enough water. Generally, it's best to use rotten manure. When it's going to bloom, it's also necessary to apply two or three times of phosphate and potash fertilizer. When it's almost over in autumn, it's better to use a winter manure to rot the manure with heat. To stop fertilizing in winter, but also to reduce the amount of water
When it grows to a certain extent, it is necessary to prune the Spiraea. The best season is spring. Before sprouting in early spring, it is necessary to prune its dead branches, as well as some too dense branches, sick weak branches and aged branches. In this way, it is necessary to keep its beauty, so that it can flourish and grow vigorously, bringing a sense of beauty to the whole courtyard.
