Rose Winter Propagation Techniques
Today, we will introduce knowledge about rose propagation, focusing on the winter propagation techniques of roses. Let's dive into the introduction by the editor.
1. Winter cutting: Also known as hardwood cutting. From the dormant period of roses to before the spring sprouting, cuttings can be made. Strong branches from the mother plant can be used as cuttings. In the morning, cut branches about 10 centimeters long and insert them into the soil. After cutting the cutting, use a chopstick to pierce a hole in the soil first, then insert the cutting into the hole. After inserting, water thoroughly, cover with a plastic bag, and place it in a warm, sunlit area to keep warm and moist. When the cutting sprouts in the following spring, remove the plastic bag, and when the young leaves grow and turn green, and the roots at the bottom grow well, they can be transplanted.
2. Winter grafting: The methods suitable for winter grafting include cleft grafting and root grafting.
① Cleft grafting: It can be carried out from late November to the following February. When grafting, dig out the rootstock, cut off the long roots, leave the main branch of the rootstock 10-15 centimeters high, and the scion is 5-7 centimeters long with 2-3 strong buds. Use a grafting knife to cut two different-sized faces at the base of the scion, one about 2 centimeters long and the other about 1 centimeter long. At the same time, cut the rootstock short 10-20 centimeters from the ground, cut off the upper branches, split it open with a grafting knife from top to bottom, about 2.5 centimeters long, then insert the scion into the layer of formation, tie it up with a plastic strip, and cover it with soil. Make sure the layers of formation are connected during the grafting process. Place it at 15-20°C, and the wound will heal in about 15 days, and roots can grow in about 20 days. It is important to remove the young buds that sprout from the rootstock in time.
② Root grafting: In winter, roses can be propagated using root grafting, which has the advantage of not needing to cultivate rootstock seedlings. Since winter is the dormant period for plants, grafting can avoid the scion withering due to excessive transpiration water loss. After grafting, place it in a room with a higher temperature to break dormancy and promote early healing of the wound. For root grafting, first dig around the roots of wild rose or 'Ten Sisters' plants to find some strong lateral roots, cut them into 8-10 centimeters long sections to use as rootstock.
Then cut strong branches with full axillary buds from the mother rose plant as scions, generally cutting three nodes into a section, and at the lower node of the base, make a duck-bill-shaped incision about 2-2.5 centimeters long. Wash the excavated roots clean and dry them with a dry cloth. Cut a slit from top to bottom at the cross-section, insert the scion, align the layers of formation, and tie it up with a plastic strip.
The grafted seedlings should be buried in the plain sand soil, keeping it moist, cover the top with a plastic bag, and place it under 15-20°C conditions. After about 20 days, the root segments of the rootstock will grow new roots and can be transplanted into pots.
The above introduces a comprehensive introduction to the winter propagation techniques of roses, hoping to bring some knowledge about green plants to green plant enthusiasts.