How to prune roses in winter
Winter is a critical period for pruning and maintenance of rose flowers. Scientific and reasonable pruning operations can not only enhance the plant's cold resistance, but also lay the foundation for explosive flowering next spring. Only by mastering the correct pruning timing and method, and combining the maintenance points at different growth stages can the roses complete their gorgeous transformation in winter. 1. Selection of pruning tools and timing Professional tools Prepare to choose gardening scissors with sharp edges (carbon steel is recommended), paired with protective gloves and disinfectant alcohol. Professional tools can ensure that the incision is smooth and avoid tearing branches and causing bacterial infection. 75% alcohol must be used to wipe the blade for disinfection before use. The best pruning period is recommended to be carried out in the Yangtze River Basin from December to early February of the following year, and in the northern region it needs to be completed before the soil is frozen. Observe when the plant enters a complete dormant state (leaves naturally fall off, buds are full and dark red). Early pruning may easily cause frostbite of new buds, and too late will affect nutrient reserves. 2. Step pruning technique The basic pruning principle adopts the rule of "three cuts and three stays": cut off dead branches (the cuts are grayish brown), sick branches (with mold spots or eggs), and weak branches (diameter <3mm); retain strong branches (green and full skin), basal branches (new branches within 20cm from the root), and guide branches (healthy branches growing 45° outward). Advanced styling techniques The upright rose retains the trunk height of 40-60cm, and leaves 3-5 outward bud points for each main branch; the vine rose needs to be tied and fixed long branches, and only 1/3 of the top of the side branches are cut off; the bush rose adopts a "funnel shape" pruning, with the central branch 10-15cm lower than the periphery to enhance ventilation. 3. Special scenario treatment plan for seedlings and sick plants. Seedling within two years old only need to remove the residual flowers and retain all leaves for photosynthesis; when black spot disease branches are found, 15cm of healthy parts need to be cut down and sprayed with mancozeb solution to prevent spread. In response to extreme climate, the northern region adopts the "soil pruning method": immediately after pruning, cover the roots with decomposed pine needles to form a 10-cm insulation layer; healing agents should be applied to the incisions in rainy areas in the south of the Yangtze River to prevent rainwater soaking and causing rot. 4. Points of full-process wound care after cutting Avoid watering within 48 hours after trimming, and wait until the incision becomes natural. Operation is best before 10 a.m. on sunny days. If it is rainy, use plastic wrap to temporarily wrap the incision and remove it after the weather turns fine. Nutrient replenishment strategy After pruning for 1 week, bone meal (5 g/plant in potted plants and 15g/plant in ground) was buried along the edge of the pot, and combined with spraying potassium dihydrogen phosphate solution (1:1000) to enhance freezing resistance. The next year, the decomposed fish intestine fertilizer will be applied before germination to promote the healthy growth of new branches.
Scientific winter pruning is like precision surgery on roses, which requires accurate removal of redundant tissue while retaining growth potential. Through the combination of phased pruning and refined maintenance, it can not only improve the survival rate of plants through winter, but also directionally regulate the number and quality of spring flowers. It is recommended to keep pruning records every year and continuously optimize the operation plan based on the actual performance of the plants.