Detailed Explanation of Rose Bud Grafting Methods and Key Technical Points
1. Selection of varieties:Choose traditional superior varieties, such as Gansu "Kushui Rose", Shandong "Pingyin Rose", Beijing "Miaofengshan Rose", etc. (traditional roses bloom once in late spring and early summer), or choose the recently hybridized "double-season rose", also called "multi-season rose" (which can bloom twice a year). It is best to choose the recently introduced "Dutch four-season rose", which has a strong fragrance, yields a lot of essential oil, and blooms without setting fruit (flowers but no seed), and can bloom continuously all year round.
2. Selection of rootstock and preparatory work:Either wild roses or ordinary monthly roses (Rosa chinensis) can be used as rootstock. Dig them up in early winter or before bud break in early spring, plant them together in a seedling bed, water them thoroughly, cultivate them well, and wait for grafting.
3. Grafting time:Grafting can be done before bud break in spring, as well as in summer, autumn, and early winter when the branches are mature and the buds in the leaf axils are plump.
4. Grafting:In advance, choose the variety you like, and begin grafting on a sunny morning after the dew has dried. For the scion, use branches of the current year's growth; use vigorous branches with plump buds, free of disease and injury, as the scion. Use a sharp knife to cut the scion bud, cutting around the bud with a bark layer 1 cm long and 0.5 cm wide, with a little wood layer beneath the bark. For the rootstock, also use one-year-old mature branches. At 5-10 cm above the ground, cut an incision of the same size on the rootstock branch, press the scion tightly against the incision on the rootstock, align the bark layers, with the bud eye facing upward, remove the leaf stalk, and expose the bud eye. Bind it tightly and securely with plastic tape (for the plastic tape, you can use plastic film 0.03-0.06 cm thick, cut into strips 20-25 cm long and 1-1.2 cm wide).
5. Management after grafting:After grafting, water thoroughly once in a timely manner, and thereafter water again when the soil dries. Carry out one pinching and topping to conserve nutrients and promote the growth of the grafted bud. Buds begin to sprout 7-10 days after grafting. Leave 1-1.5 cm above the scion and cut off the excess portion above it. Normally, remove the suckering buds on the rootstock, leaving only the scion bud to grow. After 25-30 days, the bark layers have completely healed, and the plastic binding tape can be removed. About 30 days after grafting, the plant can bloom and be ready to leave the nursery as a seedling. Before leaving the nursery, pay attention to the prevention and control of pests and diseases.