Why are my plant leaves turning yellow?

In 70% of cases, yellowing is caused by overwatering. Other causes include light deficiency, nitrogen deficiency, temperature stress, or pests.

Is yellowing always serious?

No. A few lower leaves yellowing is normal leaf renewal. It is serious if yellowing is rapid, widespread, or accompanied by wilting.

How do I tell overwatering from light deficiency?

Overwatering: older lower leaves yellow first, soil stays wet. Light deficiency: new leaves grow small and pale, the plant stretches toward light.

Can I save a plant with many yellow leaves?

Yes, if roots are still healthy. Reduce watering, improve drainage, remove yellowed leaves, move to better light. Recovery usually visible in 2 to 3 weeks.

What is the most common cause of yellow leaves?

Overwatering is responsible for 65 to 70% of cases. Most plants prefer slightly dry soil between waterings.

Yellow Leaves on Plants — Causes and Solutions | Verdier

Why are your plant leaves turning yellow? In 70% of cases the culprit is overwatering. Learn to diagnose and treat yellow leaves with this step-by-step guide.

Why are plant leaves turning yellow?

In 65 to 70% of cases the cause is overwatering. Other causes: light deficiency, nitrogen deficiency, temperature stress, or pests.

Main causes

1. Overwatering

Older lower leaves yellow first, soil stays wet. Fix: stop watering 7 to 10 days, improve drainage.

2. Light deficiency

New leaves grow small and pale, plant stretches toward light. Fix: move to bright indirect light.

3. Nutrient deficiency

Yellowing progresses from older leaves upward. Fix: apply balanced fertilizer.

4. Natural renewal

Only the lowest oldest leaves yellow — this is normal, no action needed.

Fix in 4 steps

Finger test 5cm into the soil. Wet: stop watering. Dry: water thoroughly.
Remove fully yellowed leaves with clean scissors.
Move to better indirect light.
Fertilize if not done in 3 or more months outside winter.

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Yellow Leaves on Plants — Causes and Solutions