Why Are My Plant's Leaves Turning Yellow? 7 Causes and Fixes
Disclosure: This guide may contain affiliate links. If you buy through them, PlantHabit may earn a small commission at no extra cost to you. We only recommend gear we would use ourselves. Learn more.
Yellow leaves are a houseplant’s way of telling you something’s off — but they’re not always a crisis. The trick is reading which leaves are yellowing, and how, to find the cause. Here are the seven usual suspects, from most to least common.
Quick answer: The #1 cause of yellow leaves is overwatering. If the soil is soggy and lower leaves are turning yellow and soft, ease off watering before anything else.
1. Overwatering (the most common cause)
Soggy soil suffocates roots, and the first sign is usually lower/older leaves turning yellow and feeling soft or mushy. The soil may smell musty.
Fix: Let the soil dry out more between waterings. Stick a finger 2–3 cm in — if it’s damp, wait. Make sure the pot has drainage holes and empty the saucer so the plant isn’t sitting in water. Not sure which way you’re erring? See overwatering vs underwatering.
2. Underwatering
Too little water also yellows leaves — but they’ll feel dry, crispy, and curling, and the soil will be bone dry and pulling away from the pot’s edge.
Fix: Water thoroughly until it runs out the drainage holes, and water more consistently. A watering schedule that matches your plant prevents this.
3. Too little (or too much) light
A plant not getting enough light often yellows and drops lower leaves as it “gives up” on them. Too much direct sun can also bleach and yellow leaves, especially on shade-loving plants.
Fix: Move the plant to bright, indirect light (near but not directly in a sunny window). Rotate it occasionally so all sides get light.
4. Nutrient deficiency
If new growth is pale or yellow while veins stay green, the plant may be short on nutrients (often nitrogen or iron), especially if it hasn’t been repotted or fed in a long time.
Fix: Feed with a balanced, diluted houseplant fertilizer during the growing season (spring/ summer). Don’t over-fertilize — more is not better.
5. Normal aging
Sometimes a yellow leaf is just an old leaf. If it’s the oldest, lowest leaf yellowing occasionally while the rest of the plant looks healthy, that’s normal — the plant is shedding it.
Fix: Nothing needed. Snip it off if you like.
6. Pests
Sap-sucking pests (spider mites, aphids, mealybugs) drain leaves and cause yellow stippling or patches. Check leaf undersides for tiny bugs, webbing, or sticky residue.
Fix: Wipe leaves, rinse the plant, and treat with insecticidal soap or neem oil. Isolate it from other plants until it’s clear.
7. Shock from a recent change
Just repotted, moved, or bought the plant? A few yellow leaves after a big change (new home, new pot, temperature swing) is a stress response, not a death sentence.
Fix: Keep conditions stable and don’t fuss. Most plants settle within a couple of weeks.
How to diagnose fast
- Lower leaves, soft + soggy soil → overwatering (most likely).
- Crispy, curling + bone-dry soil → underwatering.
- Pale new growth → needs feeding or more light.
- Stippling/webbing/bugs → pests.
- One old bottom leaf, rest healthy → normal aging, relax.
Frequently asked questions
Should I cut off yellow leaves? A fully yellow leaf won’t turn green again, so you can remove it to redirect energy — but fix the underlying cause first, or new leaves will yellow too.
My plant has yellow leaves but looks otherwise fine. Is it dying? Usually not. A few yellow leaves — especially old lower ones — is normal. Worry when many leaves yellow quickly or new growth is affected.
Can overwatering be fixed? Yes, if caught early: let it dry out, improve drainage, and in bad cases repot into fresh, well-draining soil and trim any black, mushy roots.
Related guides: