Secondly, the best time for bud grafting is from the end of May to the end of August, because after the end of May, the lower part of the new buds that occurred in that year has been lignified and peeled off well, which is also the peak season for the growth of Chimonanthus praecox, and the survival rate of bud grafting is high.
Third, choose the right bud. Generally, bud grafting of flowers and trees is to select new buds on branches that grow in the same year, and bud grafting of wintersweet is to select hidden buds on branches that grow in the first year. The operation method is the same as other D-shaped grafting methods. After 20 days of grafting survival, the hidden buds began to sprout. When 2-3 leaves grow, take off the binding rope, strengthen maintenance, and be careful not to be blown off by strong wind. Before the first ten days of June, the grafted plants can grow to 50 cm to 65 cm in that year, and some of them can bloom in winter. After mid-June, most of them can germinate in the same year and grow to 15-30 cm. After a few buds survive, they will not germinate until the next spring, but they will thrive. As long as it is properly protected, it can grow to about 1 m in the second year and bloom in winter. The grafting of Chimonanthus praecox should use the hidden buds on the branches that grow in the first year, which is the key to the survival of Chimonanthus praecox bud grafting.
Another problem is to pay attention to when budding with hidden buds. Every winter when Chimonanthus praecox blooms, when pruning and shaping, some vigorous branches should be deliberately left as materials for budding in summer. Without this preparation, it is difficult to find a hidden bud suitable for budding.