This method is more complicated to operate. Friends who are willing to try can operate according to the elements I said. First of all, they need to carry out the steps of seed collection. Their seeds are generally mature in September. At this time, they choose healthier plants. When the Samara turns yellow and the seed kernel begins to harden, they should be picked off in time. After the seeds are treated, they can be sprouted.
Because the dormancy period of seed is long, it is very important to promote germination. At this time, you can choose a leeward and sunny place to dig the trench to the bottom of the frozen soil layer, but also to ensure that the water level is above the bottom. The width is about 80cm and the length is enough to plant seeds. In the following to spread a layer of about 10 cm of wet sand, then you can put the seeds into the ditch, and wet sand to fully mix.
A layer of wet sand should be covered at a distance of about 10cm from the ground, and finally the soil should be covered. This process will take about two or three months. After that, it can be seeded and maintained normally. At this time, we also need to remind you that in case of drought in early spring, we must make up water in time, or the soil will become hardened and will not sprout.
You must be familiar with this method. It's relatively simple. I suggest you choose this method if you have the conditions. First of all, the branches should be selected. Each section should not exceed 20cm. The lower opening should be cut obliquely. Try to use a sharp knife as much as possible, so as not to hurt the left branches and bark. After disinfection, it can be soaked in rooting solution, which is more conducive to their rooting.
Before planting, prepare the land to cultivate them, and fill in the basic fertilizer. Organic fertilizer is the best. Even if the cuttage is completed after the film covering treatment, but the later management can not be ignored, proper shading for them can make their survival rate higher
