1, generally from mid-June to the end of February in the south, and generally from the end of February to March in the north. Basically, after first frost, because this is the best time for branches to die, there will be no frost, so you don't have to worry about being damaged by low temperature and freezing after pruning.
2. Prune after the flower bud begins to swell, and germination is the sign of pruning. Because when the new buds just grow, pruning at this time will not harm the roses. Prune once after the rose period, and the pruning effect at other times is not very satisfactory.
3. When the rose grows new branches and blooms in spring, it means that it can be pruned during the dormant period when the new buds begin to unfold, and it can be pruned until the following spring. If bloom is on an old branch instead of a new one, it needs pruning after flowering.
Second, the wild rose pruning method
1. First, prepare trimming tools to ensure smooth and tidy incision. Disinfect the scissors before pruning again to avoid infection between diseased branches. Prune at a 45-degree angle to make the branches and leaves flow downward to avoid infection with germs.
2. The pruning position should choose to cut off the branches above the bud eye, so as to transport the energy of the plant to the bud eye and promote the growth of the branches. After pruning, plant ash should be applied to the incision for disinfection, which can effectively avoid the harm of pests and diseases.
3. Pruning dead branches and dead branches can effectively preserve nutrients. For thin branches and leaves, thin branches and branches crossing the center of shrubs, they should be trimmed from the roots. Because these branches and leaves will affect the air circulation and the health of shrubs.
4. Cut off about 2/3 of the new shoots of potted annual seedlings whose height is more than 30 cm and about 1/2 whose height is less than 30 cm. Plants that are too small may not be trimmed. In order to make the rose bushes reach the ideal shape, the remaining branches should be trimmed. Cut off 0.6 cm outside the outward bud eye, so that the branches face the foreign minister.