Cutting method and time of rose
As one of the top ten famous flowers in China, rose has become the first choice for gardening enthusiasts because of its gorgeous color and strong adaptability. Mastering the correct cuttage method is the key to achieving rapid reproduction of rose, among which time selection and branch treatment are particularly important. This article will explain in detail the seasonal rules and two practical techniques of rose cutting to help you easily cultivate new plants. The best season for the golden period of rose cuttage is spring (April-May) and autumn (September-October), when the average daily temperature is stable at 18-25℃. At this time, plant cell activity is strong and is conducive to the formation of callus. Hardwood cuttage can be carried out during the alternating period of winter and spring (February-March), and insulation measures need to be combined. Climatic factors recommend maintaining air humidity at 70%-80% to avoid direct strong light. Cutting requires drainage and waterlogging prevention in the rainy season, and sunshade nets need to be built during high temperatures in summer. The selection criteria for the whole branch process of tender cuttage select semi-lignified branches of the year with a diameter of about 0.5 cm within 1 week after flowering. Keep 2-3 plump buds, cut the top flat and the base obliquely 45° to increase the water absorption area. The key points for substrate preparation are recommended to mix perlite: vermiculite: humus in a ratio of 2:1:1, and the pH value is controlled at 6.0-6.5. High temperature disinfection is required before use, poured thoroughly with water, and left to stand for 24 hours before use. Special treatment of hard branch cuttage in winter branch maintenance Select fully lignified and strong branches, and seal the incision with paraffin before storage in the sand. The sand bed is maintained at a low temperature of 5-10 ° C, and the spray is maintained every week. The root-promoting technique adopts the "double ring stripping method": girdle the base of the cuttings at an interval of 2cm above and below for 0.5cm, and apply 2000ppm IBA rooting agent solution. Keep vent holes when covering the film, and remove the film for 1 hour at noon.
Whether it is tender cuttings or hard branch propagation, keeping the substrate moist without stagnant water is the key. Gradually increase the light after the new buds unfold, and spray 0.1% potassium dihydrogen phosphate solution. Mastering these core technologies, you will achieve a breakthrough in the survival rate of rose cuttings of more than 90%.