(1) basin: the main consideration is the size of the basin. It depends on the specific size of cactus. Don't be too big, otherwise the drainage is not good, cactus is easy to rot. The size should be moderate. It's better to have a small hole in it. Shape and color can be determined according to preference.
(2) soil: permeability and drainage are mainly considered. Garden soil is OK. Add some coarse sand. Before transplanting, it is better to disinfect.
(1) take out the plant first. However, in order to prevent the pricking on the plant to our hands, it is better to wear plastic gloves to protect. Then, clamp the plant with pliers. Tap the flowerpot gently to loosen the soil. Take this opportunity to remove the plant. However, be careful not to hurt the root.
(2) then trim. Mainly for the root. Remove the old root, rotten root and sick root.
(3) then, the plant can be transplanted into a new flowerpot. Fix the plant in the new basin first, and then fill in the prepared soil. After that, we should compact the soil and clean the dirty places.
After transplanting, maintenance is also very important. If the maintenance is not good, the plants can not adapt to the surrounding environment. Just after transplanting, water it once. Then, put it in a cool and ventilated place. In about a month, new roots can grow. At this time, normal maintenance can be resumed
