Key Points for Maintaining Chinese Roses in Summer
The editor will tell you about the knowledge of maintaining Chinese roses in summer for green plants and flowers, and then guide everyone to learn about it.
Key Points for Maintaining Chinese Roses in Summer
Key points for maintaining Chinese roses in summer
1. Water. The most important thing in summer is not to lack water. In areas with high temperatures and many strong sun days, the soil should contain more fine particles with a bit of stickiness, such as garden soil, to improve water retention. When it is found that the plants wilt after watering thoroughly once a day and then watering again the next day, but recover after thorough watering the next morning, it indicates that the root system is relatively full, and it is best to change to a larger pot.
2. Fertilizer. Apply a balanced NPK fertilizer diluted 1000 times every ten days or so. In places where it often rains, you can sprinkle some granular slow-release fertilizer on the pot surface, allowing it to dissolve slowly with the rain for frequent light fertilization.
3. Pests and Diseases. The main pests are red spiders, caterpillars, and various green caterpillars, and the main diseases are powdery mildew (in some varieties) and black spot. Mix fungicides and insecticides every ten to fifteen days. Alternate the use of medicines for controlling caterpillars or red spiders. When rainy and sunny weather alternates, spray the fungicide to prevent black spot disease as soon as the leaves are almost dry after the rain. For green caterpillars, pay attention to observation, manually remove the individual ones found, and use pyrethroid drugs if they appear in many places for immediate effect. This year, a fungicide called Tetramycin was used, which is suitable for various diseases and has a good effect.
4. Pruning. In the season of vigorous growth, pay attention to keeping a larger distance between plants to enhance ventilation, and properly thin the overlapping branches and leaves inside the plant to ensure that all branches and leaves are exposed to the sun and benefit from ventilation. After the flowers, if the plant is not large, just cut off the flowers. For larger plants, cut just below two or three leaves under the flowers. Pruning is flexible; for long flowering branches, prune more, and for shorter ones, prune less. The principle is the same: if you want the flowers to be as even as possible, try to prune at the same time, and keep the main branches after pruning on the same plane. For varieties with multiple flowering heads, you can cut one as it wilts. For non-multiple flowering varieties, remove the petals (leave the receptacle) of the first wilted flowers to prevent residual flowers from rotting on the branches after getting wet with rain and causing diseases. Try to retain more leaves that can be exposed to the sun to take advantage of vigorous photosynthesis to produce more nutrients and generate more basal or suckering buds.
The above is a detailed introduction to the key points for maintaining Chinese roses in summer. Have you understood?