When to propagate roses by cutting?
An introduction to the timing and methods of propagating roses by cutting, as well as related information about green plants and flowers. Next, the editor of this site will introduce it to everyone.
Roses belong to the Rosaceae family, Rosaceae deciduous shrubs, which can grow like vines or creepers. They have a rich variety of colors and strong fragrance, blooming throughout the four seasons with high ornamental value. The colors of roses include red, pink, yellow, white, orange, purple, bordered, original color, and bicolor on both sides, etc., very rich. Roses are known as the queen of flowers, adaptable, cold and drought-resistant, easy to plant, and are a favorite ornamental plant for urban and rural people. Rose flowers are also called everblooming flowers or four-season roses because they bloom all year round. Roses are one of the most favorite flowers for home gardening enthusiasts and are widely cultivated in various places, especially indoor potted roses. The propagation of roses, especially cutting propagation, is relatively easy, with low production costs for the flower seedlings, and it is suitable for large-scale production. In which season should roses be propagated by cutting? Roses can be propagated by cutting in all four seasons, with the highest survival rate in spring.
Spring Cutting: Spring cutting usually starts from mid to late April each year and ends in late May. Due to the warm weather and relatively high humidity during this season, the cut surfaces can heal in about 20 days, and roots can grow in about 25 days. If managed carefully, the success rate of cutting can exceed 95%. The cuttings can be transplanted into pots after a month.
Summer Cutting: The method of cutting and propagation is the same as in spring. The main task in summer is to provide good shading and keep the bed soil moist. Maintain 95% relative humidity of the air, but the moisture in the cutting bed should not be excessive, and the cuttings should be sprayed at 9-10 am and 3-4 pm in the afternoon.
Autumn Cutting: Autumn cutting starts from the end of August and ends at the end of October. Due to the gradual decrease in temperature and the large temperature difference between day and night, the healing and rooting speed of the cuttings in autumn cutting are slower than in spring cutting.
Winter Cutting: With low temperatures in winter, winter cutting is usually done in a greenhouse, plastic greenhouse, or small arch shed covered with plastic film. The main task of management is to keep the temperature and humidity. To promote root growth, the cuttings can be treated with indolebutyric acid or indoleacetic acid for 10-30 seconds, or the cuttings can be girdled before propagation.
Are there any precautions when propagating roses by cutting?
Firstly, pay attention to the control of temperature and humidity when propagating roses by cutting, generally requiring the temperature to be between 25-30°C. The relative humidity of the air should be above 80%, and the soil moisture should not be too high. It's fine as long as the soil can form a ball when pinched in the hand and can散 when released. Too much soil moisture can cause the base of the cuttings to rot.
Secondly, the selection of cuttings. Different varieties of roses have different flower sizes and stem thicknesses. To make roses grow short and strong, it is first necessary to choose varieties with large flowers. Cuttings should be taken from healthy, disease-free mother plants and thick, strong cuttings should be used for propagation to ensure robust growth.
Thirdly, the density of cutting should not be too dense, and the cuttings should be collected, planted, watered, and shaded on the spot. Generally, a slightly lower density is better, with a spacing of about 9 centimeters between plants, which results in stronger growth.
Fourthly, the cutting bed should be filled with 20 centimeters of sifted and cleaned coarse sand. After cutting, water thoroughly and set up a shade shelter.
Fifthly, after the cuttings have rooted, they should be checked in time. If the roots of the rose cuttings are about 5 centimeters long and the color changes from white to brown, they should be transplanted immediately. Otherwise, if the time is too long, the limited nutrients in the branches will not be supplied, and the branches will wither.
The above information introduces the timing and methods of propagating roses by cutting, which green plant enthusiasts can refer to.