Why Does the Epipremnum aureum Suddenly Have Yellow Leaves?
As one of the most popular indoor foliage plants, the sudden appearance of yellow leaves in Epipremnum aureum always causes concern for caretakers. This article combines field testing with botanical theories to systematically analyze five common causes and corresponding solutions, helping you quickly identify the root of the problem.
One: Sudden Temperature Drop Causes Yellow Leaves
Symptom Characteristics
The leaf edges show a burnt yellow discoloration, often accompanied by leaf curling. This is common when placed on a windowsill in the north during winter, with symptoms appearing within 48 hours after exposure to cold wind.
First Aid Steps
1. Immediately cut off the yellow leaves (retain the petiole to promote new buds) 2. Move the pot to a stable environment of 18-25°C 3. Use a transparent insulating cover to maintain a microclimate
Two: Over-fertilization Burns the Roots
Key Identification Points
General yellowing of the plant, with both new and old leaves showing brown spots. This is common 3-5 days after applying uncomposted organic fertilizer or high-concentration chemical fertilizers.
Solution
1. Soak the pot in water for 3 consecutive times (30 minutes each) 2. Prune blackened and rotting roots 3. Switch to a coconut coir and perlite mixed substrate
Three: Strong Light Burns the Leaf Surface
Typical Manifestation
The leaves show sunburn spots, with irregularly spreading yellowed areas. Placing it near a west-facing window for 2 hours in summer may trigger this.
Care Adjustment
1. Move to a location 1.5 meters away from the east window 2. Install 70% shade netting 3. Mist in the morning to increase humidity
Four: Dual Crisis of Water Imbalance
Dryness-Type Yellow Leaves
The leaves wilt with yellowing at the base, and it's necessary to soak the pot immediately when the soil cracks to a depth greater than 5cm.
Waterlogging-Type Yellow Leaves
The young leaves turn yellow first, and the stems become soft. You need to change to a breathable terracotta pot and mix in 30% volcanic rock particles.
Five: Hidden Killer of pH Imbalance
Long-term use of tap water can lead to soil alkalization (pH > 7.5), which hinders the absorption of iron. Regularly watering with a 1000-fold solution of ferrous sulfate once a month can effectively prevent this.
By systematically checking the five key factors and combining them with corresponding treatment plans, new leaves usually sprout within 2-3 weeks. It is recommended to establish a care log to record data such as temperature and humidity, and fertilization frequency, to achieve scientific and meticulous management.