Aloe Vera Yellow Leaves — Causes and What to Do
Aloe Vera (Aloe vera)
Symptoms
- leaves turning yellow from green
- leaves yellowing before going soft
- yellow lower or outer leaves
- pale yellow color throughout plant
Causes
Overwatering
Yellow leaves are the first warning sign of overwatering in Aloe vera, appearing before the leaves go soft and mushy. The root stress from waterlogged soil interrupts chlorophyll production and nutrient uptake, causing the characteristic yellowing. The soil will feel wet or the plant will have been watered recently.
Underwatering
Severe drought eventually causes the outer leaves to yellow as the plant draws water from them to sustain the inner, younger leaves. Unlike overwatering yellowing (which is widespread and paired with wet soil), underwatering yellowing typically begins with the outermost leaves and is paired with bone-dry soil.
Nutrient deficiency
Aloe vera in old, depleted soil that has never been fertilized may develop pale, washed-out yellow-green coloring from lack of nitrogen and micronutrients. The entire plant becomes pale rather than specific leaves yellowing.
Cold stress
Exposure to temperatures below 50°F causes leaf yellowing in Aloe vera, often accompanied by a slight softening of the affected leaves. This typically affects the side of the plant closest to a cold window.
How to Fix It
- 1
Check the soil moisture: wet soil + yellow leaves = overwatering. Dry soil + yellow outer leaves = underwatering.
- 2
For overwatering: stop watering; allow soil to dry completely; inspect roots if yellowing is widespread. See overwatering and root rot guides.
- 3
For underwatering: water thoroughly until drainage flows from the bottom; the yellowed outer leaves won't recover but the plant will stabilize.
- 4
For nutrient deficiency: apply a diluted cactus fertilizer at half strength in spring.
- 5
For cold stress: move away from cold windows; ensure temperatures are consistently above 55°F.
Prevention
- Water only when soil is completely dry
- Maintain temperatures above 55°F
- Fertilize lightly once in spring
Quick Summary
| Plant | Aloe Vera (Aloe vera) |
|---|---|
| Category | Watering |
| Likely causes | Overwatering, Underwatering, Nutrient deficiency, Cold stress |
| Fix steps | 5 steps — see above |