Winter Golden Pothos Old Yellow Leaves
As a star indoor air purifying plant, the golden pothos is loved for its strong vitality. However, every winter, the issue of yellowing leaves always causes headaches for plant enthusiasts. This article deeply analyzes the root causes of yellow leaves with scientific experimental data and 20 years of cultivation experience, and provides a systematic solution.
Top Five Core Triggers for Yellow Leaves in Winter Golden Pothos
1. Excessive Fertilization Causes Root Burn
In winter, the golden pothos enters a semi-dormant period, and its root absorption ability decreases by 60%. Excessive fertilization can lead to salt accumulation, causing typical fertilizer damage yellow leaves: yellow leaf tips and black leaf veins. It is recommended to switch to a 0.1% potassium dihydrogen phosphate solution for foliar application, once a month is enough to meet the needs.
2. Imbalanced Light Affects Photosynthesis
Experimental data shows that the golden pothos has the highest chlorophyll content under a light intensity of 500-2000 lux. In winter, it should ensure 4 hours of scattered light per day, which can be monitored by a mobile phone light meter app. A south-facing window combined with a gauze curtain is the best choice.
3. Improper Watering Leads to Root Suffocation
Winter Golden Pothos Old Yellow Leaves
In winter, evaporation decreases by 70%, it is recommended to use the "chopstick test": insert a bamboo chopstick into 2/3 of the potting soil, let it stand for 5 minutes, and then pull it out. If there are no obvious water stains, water it. Terra cotta pots are more suitable for water control in winter than plastic pots.
4. Closed Environment Induces Fungal Infection
It should ensure 2 hours of ventilation per day, and can adopt the "staggered window opening method": open the windows from 10 to 11 am and 2 to 3 pm each for 1 hour. Use a circulating fan to keep the air flowing, but avoid direct blowing on the plant.
5. Dry Air Accelerates Water Loss
The humidity monitor should be kept at 50%-70%, and the "sandwich humidification method" is recommended: place ceramsite in the pot bottom tray + water storage cotton rope in the middle layer + surface layer of sphagnum moss wrapping. Combined with morning and evening back of the leaf spraying, the effect is increased by 3 times.