What's wrong with the withered leaves?
As a climbing ornamental plant, the grass is very popular among horticulture enthusiasts, but its leaves often dry and curled during maintenance. Based on professional gardening experience, this paper systematically analyzes the three major causes of leaf abnormalities and corresponding solutions to help flower friends accurately diagnose plant diseases. 1. Improper water management causes wilting 1.1 Performance characteristics of waterlogging. Although the sweetgrass prefers humid environments, its fleshy roots are extremely sensitive to stagnant water. When the basin soil is poorly drained or overwatered, the root system will become browned and rotted due to lack of oxygen. At the beginning, the leaf tips will be scorched and withered, and then the entire leaves will curl and fall off. It can be judged by observing whether the basin soil is hardened and whether the roots are black. 1.2 Scientific water replenishment plan should stop watering immediately after discovering waterlogging, and use bamboo sticks to make holes in the basin soil to speed up drainage. Maintain the principle of "seeing dry, seeing wet" in spring and autumn. Water replenishment in the morning and evening in summer needs to be used in conjunction with sunshade nets, and water 1-2 times a month during winter hibernation. It is recommended to use pottery pots and add 30% perlite to improve soil structure. 2. Imbalanced light regulation leads to yellow leaves 2.1 Light environment requirements. As positive lianas, creepers require 5-6 hours of direct light every day. When there is insufficient light, the plants grow significantly, the new leaves are thin and light in color, and the old leaves appear with reticular spots from bottom to top. However, under continuous high temperatures in summer, the leaf margins are prone to sunburn. 2.2 Light optimization measures suggest setting up movable planting frames, maintaining them with full sunshine in spring and autumn, and using 50% sunshade nets at 11-15 o'clock in summer. Indoor planting should be placed on a south-facing balcony and supplemented with a plant fill light for 3 hours a day. Pay attention to turning the basin step by step to avoid sudden exposure. 3. Abnormal nutrient supply induces scorched edges 3.1 Identification and diagnosis of fertilizer hazards Excessive application of nitrogen fertilizer will cause brown scorched spots on leaf tips, and excessive phosphorus and potassium will cause leaves to curl and harden. When organic fertilizers are not decomposed, ammonia gas will be produced to burn stomata, which is manifested by irregular yellowing of leaves. It is recommended to use an EC value detector to monitor soil conductivity every month. 3.2 The precise fertilization strategy uses water-soluble fertilizer in a ratio of "3-1-2" during the growth period, diluted 2000 times every half month. Apply potassium dihydrogen phosphate foliar fertilizer (concentration 0.2%) during the bud appearing period. Immediately after fertilizer damage occurs, soak and rinse 3 times. If severe, replace 50% of the cultivation substrate. After pruning, roots are dipped in rooting powder and re-plant.
By systematically adjusting the three major elements of water, light and fertilizer, and coordinating with regular pest and disease inspections (focusing on red spiders and aphids), the leaves of the mountain creeper can be restored to their shiny and stretched state. It is recommended to establish a maintenance log to record data such as watering frequency and fertilization amount to gradually understand the growth laws of plants.