Pruning methods of lilacs
The common pruning methods of lilacs are as follows
Thinning pruning
The degree of thinning is strong, mainly to maintain the lilacs The tree shape and growth momentum are conducive to growth and flowering in the coming year. Thinning should be carried out every year after the leaves fall, mainly to remove diseases and insect pests, dead branches, twigs, hollow branches, overlapping branches, excessive branches, etc. Affecting growth and beauty; all small side branches at the lower part of the main branch need to be cut off; old branches should also be cut off to keep the remaining main branches evenly spaced and moderately dense.
Short cutting
Short cutting is a light cutting, mainly pruning plants that do not need to be planted, thinning out branches with too dense inner cavities, increasing ventilation and light transmission, and accelerating the germination of new branches and flower buds. form. All inflorescences of lilac are attached to the tops of branches and differentiate into flower buds from terminal buds. Therefore, after entering the flowering period, it is not advisable to cut it short. It should be pruned after the flowers have disappeared. Every year in late spring and early summer, when the inflorescence begins to wither, if no seeds are left, the remaining flowers can be cut off together with the two buds at the lower part of the flower spike to reduce nutrient consumption. If the flowers are not cut off, the number of flowers will be greatly reduced in the second year, and they may not even bloom.
Cut flowers
Lilacs have excellent ornamental effects and are important cut flowers for indoor vase cultivation and hydroponics. When pruning flower branches, be sure to cut the side branches close to the bottom. You must not climb or break it with your hands, so as to avoid leaving any stumps. A large bush of mature lilacs can provide a large number of cut flowers every spring, but when cutting cut flowers from young lilacs that are blooming for the first time, the number should not be too large, otherwise it will affect the growth of the young tree.
Daily pruning of lilac
In daily pruning, the roots of tillers that are not used for plant division should be cut off in time, especially those cultivated with ash, ligustrum, and lilac as rootstocks. Grafted seedlings because a large number of tillers occur from the rootstock every year. If not cut back promptly, lilac bushes will often be replaced by rootstock.
Rejuvenation of old lilac trees
Lilacs have strong vitality, and old seedlings can rejuvenate with one or two renewal methods. An update is to cut off all the branches on the ground of the lilac tree and let it grow new branches, which will quickly form a new plant. The first update may affect the appearance, so you can use the second update method and prune it every two years. Cut off half of the old branches in the first year, leaving the other half to maintain the original shape of the tree, and cut off the remaining half of the old branches in the second year. This will not affect the ornamental quality, but also provide assimilated nutrients for the growth of new branches.