What should I do if the leaves of Changchun flowers are rolled up?
As an ornamental plant that is evergreen all year round, the problem of curling leaves of periwinkle has troubled many flower friends. When we discover that the leaves of our beloved periwinkle are abnormally curled, we must first remain calm and find the crux through scientific diagnosis. This article will systematically analyze the causes of blade curl from five dimensions and provide detailed repair plans. Five major causes of curling leaves of Changchun flower 1. Imbalanced water management is the most common cause of leaf curl, accounting for about 60% of cases. When root absorption is insufficient, leaves curl to reduce water evaporation. However, it should be noted that excessive humidity of the soil will also cause hypoxia in the roots and form a phenomenon of "physiological drought." 2. When the light intensity is abnormal in summer, when the strong light exceeds 30000 lux, the leaves will produce protective curl; in winter, it will be below 5000 lux for a long time, causing photosynthesis to be blocked and pathological leaf curl. 3. Pest and insect pests attack the secretions of piercing and sucking pests such as red spiders and aphids, which can cause leaf abnormalities. Among them, spider webs will form on the back of the leaves in the early stages of infection. Four-step repair method saves rolling leaves. Stepped water replenishment plan After rolling leaves are found, foliar spraying should be carried out first (the humidity should be maintained at 70%), and then irrigated thoroughly after 2 hours. It is recommended to use the "dipping basin method": immerse the flower pot in the water basin for 10 minutes to ensure that the substrate absorbs water completely. Light control tips Maintain full sunshine in spring and autumn, use 50% sunshade net in summer, and ensure 4 hours of direct light every day in winter. An illuminance meter can be used to monitor in real time and maintain the light in the range of 15,000 - 25,000 lux. Key points for pest and disease control are immediately isolated when pests are found, and sprayed with 1000 times 40% omethoate EC, focusing on the back of leaves. It can be eradicated once a week for 3 consecutive weeks. Long-term maintenance and preventive measures suggest applying calcium-magnesium fertilizer once a month to enhance the strength of the cell wall, and using ceramsite paving in conjunction with maintaining the breathability of the substrate. Regularly rotate the flowerpot to ensure uniform light reception, and add 20% perlite to improve drainage when changing the pot every spring.
Through the above system maintenance, it can not only repair the existing leaf rolling problem, but also fundamentally improve the stress resistance of periwinkle. Remember that observation is the best maintenance. By regularly checking the front and back sides of the leaves and discovering signs of problems in time, the periwinkle can maintain its best viewing condition.