What season is best for cutting propagation of Chinese roses?
Main content introduction: This article shares some small experiences about the season and methods of cutting propagation of Chinese roses. The following is introduced by our station editor.
Chinese roses are deciduous shrubs of the Rosaceae family, Rosaceae, with a vine-like or creeping growth habit. They have a rich variety of flower colors, strong fragrance, and bloom throughout the four seasons, making them highly ornamental. Flower colors include red, pink, yellow, white, orange, purple, bordered colors, original colors, and bicolors on both sides, among others. Chinese roses are known as the queens of flowers, with strong adaptability, cold and drought resistance, and easy cultivation. They are a favorite ornamental plant for people in both urban and rural areas. Chinese roses are also known as "eternal flowers" or "four-season roses" because they bloom all year round. Chinese roses are one of the most popular flowers among home gardening enthusiasts and are widely cultivated in various regions, especially as potted plants indoors. The propagation of Chinese roses, particularly cutting propagation, is relatively easy, with low production costs for seedlings and suitable for large-scale production. What season is best for cutting Chinese roses? Chinese roses can be propagated by cuttings all year round, with the highest survival rate in spring cuttings.
Spring cuttings: Spring cuttings usually start from mid-to-late April and end by the end of May. Due to the warm climate and relatively high humidity during this season, the cut surfaces can heal in about 20 days, and roots can emerge in about 25 days. With careful management, the success rate of cuttings can exceed 95%. The cuttings can be transplanted into pots after one month.
Summer cuttings: The method of cutting and propagation is the same as in spring. In summer, the main tasks are to provide good shade and keep the bed soil moist, maintaining 95% relative humidity of the air. However, the cutting bed should not be too wet, and the cuttings should be sprayed at 9-10 am and 3-4 pm.
Autumn cuttings: Autumn cuttings start from the end of August and end by the end of October. As the temperature gradually drops during autumn, with a large temperature difference between day and night, the healing and rooting speed of cuttings are slower than in spring.
Winter cuttings: With low temperatures in winter, winter cuttings are usually done in greenhouses, plastic greenhouses, or small arch sheds with plastic film mulch. The main management tasks are to keep the temperature and humidity. To promote rooting, cuttings can be treated with indole butyric acid or indole acetic acid for 10-30 seconds, or ring剥 treatment before cutting.
Are there any precautions for cutting propagation of Chinese roses?
Firstly, pay attention to controlling temperature and humidity during cutting propagation. The general requirement is a temperature between 25-30°C. The air humidity should be over 80%, and the soil moisture should not be too high. It is sufficient if the soil can form a ball when pinched in hand and crumble when released. Excessively wet soil can cause the base of the cuttings to rot.
Secondly, choose the right cuttings. Different varieties of Chinese roses have different flower and stem sizes. To make Chinese roses grow short and strong, it is important to choose large-flowered varieties. Cuttings should be taken from healthy, disease-free mother plants to ensure they are thick and strong for propagation.
Thirdly, the density of cuttings should not be too high, and it is important to collect, plant, water, and shade the cuttings simultaneously. A slightly lower density is better, with a spacing of about 9 cm between plants and rows for stronger growth.
Fourthly, the cutting bed should be filled with 20 cm of sieved, clean coarse sand. After planting, water thoroughly and set up a shade shelter.
Fifthly, check the cuttings after they have rooted. If the roots of the Chinese rose cuttings are about 5 cm long and the color changes from white to brown, they should be transplanted immediately. Otherwise, if the cuttings are left too long, the limited nutrients in the branches will be exhausted, and they will die without nutrient supply.
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