How to cultivate and manage redbud (Cercis chinensis)? Mastering these key points is crucial
Redbud flowers have a wide distribution range in our country, mainly concentrated in Jiangsu, Beijing, Shandong and other provinces. The flowers of redbud are very bright and glossy, with high ornamental value. In addition, the bark, wood, flowers and fruits of redbud can all be used as medicine, so there is also a very large artificial planting area. However, when planting, we must do a good job in field management to ensure the healthy growth of redbud. So below, the editor will introduce the field management techniques for redbud!
1. Water management
Water is very important for the growth of redbud. After planting, it should be watered immediately. Especially in the early stage of planting, it should be watered at least three times in the first seven days to meet the water needs of redbud. When watering, we should control the watering frequency and amount according to weather changes. For example, in summer, water should be given in time to cool down, but the amount of water should not be too much, and after rain, attention should also be paid to drainage. If the temperature is not high in autumn, then the amount of watering should be controlled to prevent autumn decline, and then antifreeze water should be watered well to enhance the cold resistance of redbud. In the spring of the second year, water should be given in time during the green-up period. From April to October each year, except for controlling watering according to precipitation in July-August, it should be watered once every month.
2. Proper topdressing
The growth of redbud has a very large demand for nutrients. Under conditions of sufficient nutrients, robust growth of redbud can be ensured, the amount of branches and leaves can be increased, and the glossiness of the flowers can be enhanced. Otherwise, redbud will have few branches and leaves, and the flowers will be dull and lusterless. Therefore, before planting, we should apply sufficient base fertilizer. The base fertilizer should mainly be fully decomposed farmyard manure, and it should be fully mixed with the soil to prevent the roots from being burned due to excessive heat release. After normal growth, nitrogen fertilizer should be properly applied after flowering each year to enhance the growth vigor of redbud, and then phosphorus and potassium fertilizer should be applied in early autumn to promote flower bud differentiation. In addition, when watering antifreeze water in early winter, farmyard manure should be applied once, and then foliar fertilizer should be properly sprayed according to the growth vigor of the plant to fully meet the nutrients needed for the growth of redbud.
3. Shaping and pruning
Under normal growth conditions, redbud plants have luxuriant branches and leaves. If not pruned in time, branch growth will become intricate, reduce permeability, and hinder the growth of redbud. Especially when redbud is used for ornamental purposes in various gardens, pruning should be done well in its young tree stage to promote the formation of a good plant shape and enhance ornamental value. After transplanting, it should be properly shortened to promote the growth of branches, increase the nutrient absorption area, and ensure sufficient nutrient accumulation. Then in the spring of the second year, it should be heavily shortened to promote the sprouting of new branches, and about three strong-growing branches should be retained, with excess branches cut off. Then excess root suckers should be removed in time, and proper pinching should be done to promote secondary branching.
4. Other management
Redbud has a relatively large demand for light, so when planting, we should pay attention to meeting the light needs of redbud, enhancing its photosynthetic capacity, increasing nutrient accumulation, and increasing its ornamental value. However, attention should be paid to avoiding too long direct sunlight, otherwise it is prone to adverse phenomena such as high-temperature heat damage and scorched leaves. Therefore, while ensuring light, we should also provide proper shading. Finally, garden cleaning should be done well in winter. Pathogens overwinter in diseased residues, soil, and weeds and harm redbud in the spring of the second year, causing pests and diseases. Winter garden cleaning can effectively reduce the base number of pathogens and lower the incidence of disease.
The above is a brief introduction to the key points of redbud cultivation and management. When pruning redbud trees, attention should be paid to renewing the flowering branches of redbud. Generally, flowering branches over 5 years old will greatly reduce their flowering amount, and the flowering position will move upward, seriously reducing ornamental value, so they should be renewed in time. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!