What to Do When Black Spots Appear on the Leaves of Epipremnum aureum in Winter
In winter, it is common to encounter leaf black spot issues when caring for Epipremnum aureum indoors. This phenomenon is often caused by a combination of bacterial infections and environmental imbalance. This article systematically analyzes the characteristics of black spot disease in Epipremnum aureum during winter, provides professional solutions to help the plants survive the winter safely.
Core Steps for Treating Black Spot Disease in Epipremnum aureum
1. Scientific Pruning of Diseased Leaves
Immediate action is required when black spot leaves are found: ① Wear gardening gloves for protection ② Use scissors disinfected with alcohol to cut斜剪 at the base of the petiole ③ Seal and discard the diseased leaves. After pruning, apply carbendazim to the cut to prevent secondary infection.
2. Precision Medicament Control
Recommended compound scheme for (T-J) disease: ① 20% imazalil aqueous solution diluted 800 times ② Mixed with 5% kasugamycin wettable powder diluted 1000 times ③ Add organic silicone surfactant to enhance adhesion. Focus on spraying the back of the leaves, for 3 consecutive times at 5-day intervals, and rotate the chemicals to avoid resistance.
3. Intelligent Ventilation Management
Winter ventilation needs to be managed as follows: ① Choose the 10:00-14:00 time slot ② Move the plant to a sheltered area in advance ③ Use intermittent ventilation method (20 minutes/day) ④ Use a small circulation fan to enhance air circulation. In low-temperature weather, a temporary insulation shed can be built with greenhouse film.
4. Precision Water Control
Winter watering follows 3 standards: ①补水 when the soil is dry to a depth of 3cm ② Use warm water at 25-28°C for irrigation ③ Use the immersion pot method (water level not exceeding 1/3 of the pot height) instead of traditional watering. Pairing with ceramsite mulch can effectively adjust the substrate moisture.
Winter Care Prevention System for Epipremnum aureum
Establish a three-dimensional protection system of temperature-light-nutrition: ① Maintain an ambient temperature of 15°C or above ② Ensure 4 hours of scattered light every day ③ Supplement with humic acid water-soluble fertilizer monthly. Regularly wiping the leaves with garlic extract can enhance disease resistance.
By combining scientific treatment and preventive measures, not only can existing black spot diseases be effectively eliminated, but a healthy growth system for Epipremnum aureum can also be established. It is recommended to conduct preventive spraying every quarter, combined with real-time monitoring of care parameters using environmental monitoring equipment, to fundamentally prevent the recurrence of diseases.