Therefore, in order to make the plant shape correct and harmonious, the branch proportion symmetrical, the flowering symmetrical, and the flowers constantly open, it is necessary to trim it appropriately and timely.
First, the dormant period is the hibiscus dormant period after pruning in winter, which can be combined with changing pots for one-time plastic pruning.
Its purpose is to adjust the tree structure, promote the development of new branches and lay the foundation for the formation of a gorgeous crown.
1. Pruning of Hibiscus grandiflora: Pruning of Hibiscus grandiflora, aiming at full crown, big flowers and big trees.
Firstly, straighten out the relationship between branches, find out and cultivate backbone branches at all levels, and cultivate them into sparse or other shapes by borrowing the tree structure model in fruit tree pruning.
In order to make the proportion of the tree body and the planted container symmetrical, it is not advisable to leave a thousand, and it is generally more appropriate to leave half the height of the pot.
Select the trunk, and select the middle trunk and main branch of each layer.
Leave 5~8 main branches, so that they are distributed in layers on the middle trunk or evenly during evacuation; If the extension direction of the middle front and main branches can not meet the requirements, it can be adjusted by pulling method.
On each main branch, there are 3~5 lateral branches at the top.
The middle trunk and main branches are cut short, that is, the annual branches are cut off by more than half.
Only 2~3 buds are left in the lateral branches, and new branches are also cut short.
In addition, the remaining flower branches and the lush upper branches should also be trimmed again.
Overlapping branches, too dense branches, weak branches and dead branches should be thinned once or cut short again.
In a word, pruning can make the branches at all levels proportional, the tree body compact and the crown width symmetrical.
2. Pruning of small potted hibiscus: Pruning should be based on the principle of minimizing the tree body and crown width to make it an artistic tree shape.
Its trunk can be single and double trunk, straight trunk, inclined trunk, curved trunk and so on.
You can imitate the modeling mode of bonsai, stick up your roots and expose your claws or bend into a bend. If you maintain it for many years, you can also cut back the old hibiscus pile.
No matter which shape, the branches should be cut heavy and short to promote new branches and ensure flowers in the coming year.
Second, the pruning of flowering period Summer is the full flowering period of hibiscus. In order to further adjust the growth and elongation direction of some branches and promote continuous flowering, summer pruning can be carried out.
1. Cut short the upward moving branches at intervals to promote the new branches and make them blossom in turn.
2. Cut off the excessive branches.
3. Pull the branch in the wrong direction.
4. Ring-cut or ring-peel the flourishing branches with a knife to control the downward movement of nutrients and promote the short branches of flowers.
Because the sprouting power of the buds cut by hibiscus is weaker than that of the lower buds, when cutting short, make the incision slightly higher from the buds, and don't do it too close to avoid disorderly branches.
Third, auxiliary measures.
In order to induce plants to shoot more short branches and bloom more, bud carving can be carried out in spring.
That is to say, choose a robust bud at the position where it needs to be branched, and cut it horizontally at the position of 1 mm with a knife to cut off the bark on the bud to reach the depth of wood, cut off its nutrition and promote the bud to sprout branches.