Causes of Yellowing Orchid Leaves and How to Fix Them

I. Causes

1. Natural growth and metabolism

Yellowing leaves can also be a normal part of the plant's growth process. In this case, just let it grow freely, wait for new leaves to emerge, and simply prune off the yellowed leaves.

2. Water

When the plant is given too much water, the soil becomes waterlogged; when watered too little, the soil dries out. Both can cause the plant's leaves to turn yellow.

3. Light

Excessively harsh light will damage the plant's leaves, and when light is insufficient, the plant will also turn yellow from a lack of nutrients.

4. Fertilizer

When too much fertilizer is applied or the fertilizer concentration is too high, it will burn the plant's leaves; when too little fertilizer is applied, the plant will again develop yellow leaves due to a lack of nutrients.

5. Low-temperature freeze damage

If temperatures are not high enough in winter, the plant can also suffer freeze damage and turn yellow.

6. Pests and diseases

Yellowing leaves may also be a sign of a pest or disease infection.

II. Remedies

1. Water only when the potting soil looks somewhat whitish; water according to the soil's condition.

2. Place the plant in soft light, and provide shade in summer.

3. Fertilize about once every fifteen days or so; simply dilute the fertilizer in water.

4. When disease occurs, promptly spray insecticide to sterilize and disinfect.