Yellow Leaves on Plants: Causes & Fixes
Leaves turning yellow, starting from bottom, tips, or between veins
Quick Fix
Check soil moisture first — soggy soil is the #1 cause. If dry, water deeply. If wet, stop watering and let it dry.
Possible Causes
Overwatering
Roots suffocate and cannot absorb nutrients. Lower leaves yellow and drop first.
Nitrogen deficiency
Older leaves yellow uniformly starting from tips. Common in leafy greens grown in poor soil.
Iron chlorosis
New leaves yellow between green veins. Usually a pH issue in containers.
Natural aging
Bottom leaves yellow and drop as plant matures — normal.
How to Diagnose
Feel the soil 2 inches deep. Wet + smelly = overwatering. Dry + crumbly = under-watering. If moisture is fine, look at WHERE the yellowing starts: bottom = nitrogen, top = iron, between veins = magnesium.
Solution
1. Fix watering first — let soil dry to 1 inch depth between waterings. 2. Feed with balanced 10-10-10 or fish emulsion diluted per label. 3. For iron chlorosis, apply chelated iron and check that pH is 6.0–6.8. 4. Remove severely yellow leaves so plant redirects energy.
Prevention
Water only when the top inch of soil is dry. Use well-draining potting mix. Feed leafy greens every 2 weeks with diluted liquid fertilizer. Never let containers sit in standing water.
When to Worry
If more than 30% of leaves are yellow, or new growth is yellow and stunted, the plant is in serious stress and may need repotting.
FAQ
Can yellow leaves turn green again?
Usually no. Once a leaf yellows from nutrient loss, the plant has already pulled what it can back. Focus on protecting new growth.
Should I remove yellow leaves?
Yes, once fully yellow. They no longer photosynthesize and can attract pests.