What should I do if the leaves of a fortune tree have yellow spots?
As a popular indoor green plant, Fortune trees often have yellow spots on their leaves due to improper maintenance, and low temperatures in winter can easily cause the plant to weaken. This article systematically analyzes the causes and repair techniques of yellow spots, and explains in detail the five core points of overwintering maintenance to help you create a healthy and lush landscape of wealth trees. 1. Comprehensive management plan for wealth tree yellow spot disease 1.1 Pathological judgment and emergency treatment When yellow-brown spots are found on the leaves, the diseased leaves must be cut off immediately and used 75% alcohol disinfection tools. It is recommended to spray the entire strain with an 800-fold dilution of carbendazim solution twice a week for three weeks; severe plants need to alternately use chlorothalonil and thiophanate methyl, and pay attention to the rotation of agents to avoid drug resistance. 1.2 Four elements of environmental optimization·Ventilation guarantee: Maintain air circulation to avoid carbon dioxide accumulation·Humidity control: Maintain environmental humidity at 60-70%, eliminate leaf area water·Light regulation: Provide scattered light environment to avoid direct burns·Water and fertilizer management: Adopt "See dry and wet" watering method, top-applying nitrogen, phosphorus and potassium compound fertilizer diluted 1000 times every month. 2. Winter maintenance five-dimensional protection system 2.1 Temperature gradient management establishes three-level temperature protection: Maintain 15-20℃ during the day and no lower than 12℃ at night. Use plant insulation film when encountering cold currents. Special attention should be paid to avoid direct air conditioning and floor heating heat radiation areas. A 3-cm-thick heat insulation board can be placed on the bottom of the basin. 2.2 The scientific water supply plan uses the "three observation methods" for watering in winter: observe the basin soil (3cm dry), observe the leaves (slightly wilted), and observe the weather (continuous sunny days). It is recommended to use warm water at 25℃ and add EM bacterial solution once a month to enhance root vitality. 2.3 Light enhancement strategy requires 4 hours of direct light per day before and after the winter solstice, and use a light meter to monitor the intensity to maintain 8,000 - 12,000 lux. Regularly rotate the flowerpot to ensure uniform light reception, and add plant fill light on rainy days (2-3 hours a day). 2.4 Key points for nutrient supply stop nitrogen fertilizer and switch to foliar spraying potassium dihydrogen phosphate (1500 times liquid) once every 20 days. Slow-release fertilizer granules (50g per square meter) are sprinkled on the surface of the basin soil, and irrigated with decomposed rice washing water once a month. 2.5 Disease prevention measures Wipe leaf surfaces with garlic extract (1:50) every week and check stem bases regularly. Scale insects were found to be killed immediately with 75% alcohol, and matrine biological preparations were used to control them when red spiders were harmful.
By accurately diagnosing the cause of the macula and implementing a systematic treatment plan, combined with the five-dimensional maintenance system of "temperature, light, moisture, nutrition, and disease prevention" in winter, the fortune tree can remain evergreen all year round. It is recommended to make a monthly maintenance log to record temperature and humidity changes and plant status to achieve scientific and refined management.