What Causes Aloe Vera Leaves to Turn Yellow
As a common indoor green plant, yellowing of aloe vera leaves is the most typical health warning during the maintenance process. This article systematically analyzes the five core factors leading to yellowing of aloe vera leaves based on the experience of professional horticulturists, along with specific solutions and maintenance suggestions.
One: Stress Response Triggered by Environmental Changes
1.1 The Dangers of Frequent Location Changes
Experimental data shows that 70% of aloe vera yellowing cases are related to environmental changes. When plants are moved from indoors to outdoors, or frequently moved between different rooms, sudden changes in light, temperature, and humidity can lead to abnormal decomposition of chlorophyll in the leaves.
1.2 Scientific Adaptation Period Maintenance
It is recommended to use the "3-7 Days Progressive Method": keep the plant exposed to the new environment for 2 hours daily for the first 3 days, and then gradually extend to full-time adaptation over the next 4 days, while maintaining humidity balance with foliar watering.
Two: Key Points for Water Management
2.1 Diagnosis of Overwatering
When there is waterlogging at the roots, the leaves will show a special symptom of yellowing at the base and browning at the tips. You can use the bamboo stake method: insert a bamboo stake into the potting soil for 2 hours and remove it; if the moist part exceeds 1/3, water control is needed.
2.2 Precise Irrigation Plan
Keep a watering frequency of 15 days/week in spring and autumn, reduce it to 7-10 days/week in summer, and extend it to 20-25 days/week in winter. It is recommended to use a尖嘴壶 (long-spout watering can) to slowly pour water along the pot wall to avoid waterlogging in the leaf heart.
Three: Scientific Proportion of Nutrient Supply
3.1 Identification of Fertilizer Burn
Excessive fertilization can cause brown spots on the leaf surface accompanied by yellowing. If the EC value test shows that the soil salt concentration is greater than 2.0mS/cm, fertilization should be stopped immediately.
3.2 Reasonable Fertilization Cycle
Apply a balanced liquid fertilizer diluted 1500 times monthly during the growing season (April to September), and stop fertilizing during the dormant period. It is recommended to replace the special substrate with slow-release fertilizer every spring.
Four: Optimization of Air Circulation System
4.1 Consequences of Poor Ventilation
Enclosed environments can easily trigger pests like spider mites, leading to net-like yellow spots on the leaves. It is recommended to ensure at least 4 hours of air circulation daily and use a circulating fan to assist with ventilation.
4.2 Three-Dimensional Maintenance Strategy
Adopt the "Three-Dimensional Space Management Method": raise the base by 10cm when placing on the ground to increase bottom ventilation, maintain a 15cm distance from the glass when caring on a windowsill, and rotate hanging cultivation weekly.
Through systematic analysis, it can be seen that yellowing of aloe vera leaves is the result of the combined action of multiple factors. It is recommended to use the "Environmental Recording Method": establish a maintenance log to record data such as temperature, watering, and fertilizing. When yellowing first appears, quickly trace the cause and handle it. Mastering these core points can keep aloe vera in a healthy emerald-like state throughout the year.