Cedars were reshaped in the form of low branch central leading trunk. For the seedlings with bent and weak head, the young shoots should be tied up with thin bamboo poles to make the trunk straight, and at the same time, the growth advantage of its top should be used to promote its growth to a higher place. Binding work shall be carried out once a year. If a competitive branch is found on the trunk of a cedar, choose one as the central leading trunk, and the other one will be cut back, and the next year, the cut back branch will be removed.
Due to the irregular rotation of the lateral branches of the cedar, the large number and too small spacing, the lush and closed canopy, resulting in uneven distribution of nutrients, the growth of the lateral branches is often very uneven, so when pruning, it is required to arrange the lateral branches in layers on the main trunk, each layer should retain about 4-6 lateral branches, the distance between layers is about 30-50 cm, and pay attention to the protection of new shoots, while removing them. Over dense branches, thin and weak branches and disease and insect branches. For the larger branches not used as lateral branches, they should be cut short first, and then treated for a period of time.
In order to form a beautiful crown of cedar, the length of the lower side branches is required to be long, and the length of the upper side branches is required to be shortened in turn. In addition, the growth of the side branches of the same layer needs to maintain a relative balance. Therefore, when pruning, we should pay attention to the relative balance of the growth of each side branch. For the branches with strong growth, appropriate shrinkage and cutting can be carried out, and the parallel branches or sagging branches with weak growth can be selected to replace them, so as to balance the tree potential.
Retract and trim the strong branches, overlapping branches, parallel branches, etc. in the lower part, and spray appropriate amount of growth hormone on the upper part of the plant to promote the growth of the branches.
For the skew tree, we can take the method of leading branches to fill the gaps, and use ropes or wires to pull the larger branches nearby to fill the gaps. Or we can take the method of grafting, on the plants with large gaps and no branches, we can graft the robust and full buds by abdominal grafting, so as to promote the germination of new branches.
