In fact, the screw iron can grow well without trimming. But in the process of breeding, there are several situations, or need to screw iron for appropriate pruning.
First, in order to make the screw iron survive better, we can trim it properly before planting.
The second is that during the growth of the screw iron, there may be some yellow leaves, rotten leaves, etc., which need to be cut.
The third is that the plant is very tall, affecting the ornamental, and even affecting its growth, it needs to be pruned.
When trimming the screw iron, it is actually cutting off the roots of the branches and leaves. Before planting, the root of the screw iron can be properly trimmed, and the rotten and broken parts can be cut off. Branches and leaves also need to be properly pruned, which can be cut off by one-third or one-half, so that the transpiration of the plant will be weakened, more easy to survive.
Secondly, when trimming the screw iron, you need to keep its basic tree shape, so that it is convenient for future modeling. If you prune too much, it may make the plant shape not beautiful.