Rhododendron pruning
Pruning method based on coring is adopted in the small seedling stage, that is, coring is carried out every year when the annual branches grow to 4 or 5 cm to promote branching. After enucleation, 2 or 3 lateral buds will grow on the upper end of the left branch. In this way, a good tree skeleton can be formed after 2 or 3 years of culture. However, the thin seedlings should not be pulled out, otherwise the branches will be thinner and weaker, which is not conducive to future growth. The buds formed at seedling stage should be peeled off as soon as possible to avoid wasting nutrients and affecting plant growth. At the seedling stage, it is also necessary to combine vegetable pruning, especially for varieties and varieties with many branches, and cut off the inner branches of the crown, too dense branches, too thin branches and pests and diseases in time.
For plants that have formed a certain canopy shape, they should be pruned after flowering in spring or turning over pots in autumn. When pruning, you must cut off the sprouted branches. At the base of Rhododendron, many branches often sprout and consume a lot of nutrients, thus affecting the growth of plants and disturbing the tree shape, so it is necessary to erase or cut them off in time. For the plants grafted with Mao Juan as the rootstock, attention should be paid to erasing the buds on the rootstock as soon as possible to ensure the growth of the scion; Second, we should properly thin branches and cut off all branches that hinder growth and tree shape, so as to improve ventilation and light transmission conditions and concentrate nutrients to enhance growth potential; Third, the branches above the crown and the long branches that grow out of the air should be cut short to form and maintain a good plant shape.
Because the bud of rhododendron is terminal, short cutting will make the branches flowerless, so it cannot be widely used. After short cutting, many branches and buds often grow at the incision, and the extra buds should be erased in time. When the growth of adult plants decreases, we can concentrate nutrients through thinning to maintain a certain growth potential. At the same time, proper pruning and cuttage are carried out to stimulate the germination of strong new branches, or the long branches are cut short and then used and updated.