A houseplant with yellow leaves is usually not a plant that is dying, but a plant that is trying to tell you something. The tricky thing is that too much water, too little light and a lack of nutrients can all make the leaves turn yellow. If you then give it extra water or fertilizer on good luck, you often make it worse.
That is why this guide starts with the diagnosis: you will read how to tell what is wrong by looking at the location of the yellowing and the condition of the soil. This is followed by the 8 causes, what to do about them, the typical patterns for each plant type and a recovery plan.
Are yellow leaves always a problem?
No. Every leaf has a limited lifespan. When an old leaf is finished, the plant extracts the usable nutrients from it and brings them to the new growth; the leaf then slowly turns yellow and falls off. If you occasionally see one leaf at the bottom turn yellow, while the top is healthy and new leaves are added, you do not need to do anything.
Also pay attention to variegated varieties. For an Epipremnum, a variegated Dracaena or a striped mother-in-law's tongue, the yellow or cream-colored pattern is part of the plant. This pattern is sharply defined and is also on young leaves. You recognize a problem by a vague transition, by leaves that become dull or limp and by discoloration that spreads.
Where is the yellowing? This is how you make the diagnosis
Before you change anything, look at three things: which leaves are yellow (old or young), what the discoloration looks like and how the soil feels. This will usually lead you to the right cause in this table.
| What you see | Potting soil | Probable cause | First action |
|---|---|---|---|
| Occasionally one old leaf at the bottom | Normal | Natural aging | Nothing, remove the leaf if it is loose |
| Multiple lower leaves, soft and limp | Stays wet for days | Too much water | Stop watering, check the roots |
| Yellow with dry, crispy edges | Bone dry | Too little water | Place the pot in water for half an hour |
| Entire plant pale, long thin stems | Dries out slowly | Too little light | Place closer to the window |
| Yellow or white patches on the window side | Normal | Too bright sun | Move out of direct sun |
| Older leaves uniformly light green to yellow | Normal | Nitrogen deficiency | Feed during the growing season |
| Older leaves yellow between green veins | Normal | Magnesium deficiency | Give fertilizer with magnesium |
| Young leaves yellow between green veins | Normal | Iron deficiency, often due to lime-rich water | Rainwater and iron-containing fertilizer |
| Suddenly a lot of yellowing after moving or cold | Normal | Temperature shock or draft | Give it a permanent place and wait |
| Fine dots, webs or sticky leaf | Normal | Pest | Place the plant separately and treat it |
The order from old to young is the key here. A plant can move nitrogen and magnesium, so in case of a deficiency, it plunders its oldest leaves. Iron is fixed in the leaf where it ends up, which is why a deficiency becomes visible on the youngest leaves.
The 8 causes of yellow leaves and what to do about them
Start at the top, because water and light are the most common causes. Always change one thing at a time, so you can see what helps.
1. Too much water
This is the best-known cause. In wet soil, roots get too little oxygen, after which they die off and the plant can actually take up less water. Wait to water until the soil has dried out considerably and pour water out of the decorative pot. How to determine the rhythm for each type is explained in our blog watering houseplants.
2. Too little water
A plant that dries out will first sacrifice its oldest leaves. They turn yellow with dry edges, and the soil pulls away from the edge of the pot. If you do water after that, but the water immediately runs past the root ball, place the pot in a tray of water for a while. On our page about watering you can read how to prevent this in the future.
3. Too little light
Without enough light, a plant produces less chlorophyll and cannot maintain all its leaves. It then drops the lower leaves and grows long and thin towards the window. If the plant is far from the window, place it closer or choose a spot that better suits one of the houseplants for low light.
4. Too bright sun
Shade plants that are suddenly in full sun get pale or yellow patches on the leaves that are most directed towards the window. Later those patches turn brown and papery. Move the plant back a bit or hang sheer curtains.
5. A lack of nutrients
If a plant has been in the same soil for years without extra nutrients, the supply runs out. Give plant food during the growing season in the dosage on the packaging; read more about the types of nutrients on our page about plant nutrients. A plant with sick roots does not take up extra fertilizer.
6. Cold, drafts and moving
Many tropical houseplants do not like temperatures below about 15 °C and also react to cold drafts from an exterior door. After a move, a few yellow leaves are normal, because the plant has to get used to different light. Give it a permanent place.
7. Pests
Spider mites and thrips suck cells empty, which causes the leaf to first get fine light dots and then turn yellow. Always look at the underside of the leaf and in the leaf axils. How to recognize and control them can be read on our page about plant diseases.
8. Roots that can't go anywhere else
If the roots grow in circles along the pot wall and out of the drainage holes, the soil is often exhausted and the pot dries out very quickly. The plant then gradually turns yellow, even if you do everything else right. Repot it in the spring into a pot that is one size larger, with fresh potting soil. Even right after repotting, a few leaves can turn yellow; that is usually temporary.
Yellow leaves per plant type
Some varieties show in their own way that something is wrong. In our collection of houseplants you will find the location and watering requirements for every variety.
| Plant | Typical pattern | Check first |
|---|---|---|
| Spathiphyllum | Outermost old leaves turn yellow; plant droops when dry | Soil: too wet or too dry |
| Monstera | Lower leaves yellow, often in a large pot that dries slowly | Moisture deep in the pot and the distance to the window |
| Ficus benjamina | Yellow leaves and leaf drop after moving or in autumn | Recent change of location, draft |
| Calathea | Yellow edges with brown tips | Humidity and lime-rich water |
| Dracaena | Lower leaves slowly turn yellow while the stem grows | Often normal; if many leaves at once, check the soil |
| Parlor palm | Oldest leaves yellow, or yellow between the veins | Magnesium, and spider mites in winter |
| Zamioculcas | Entire stems turn yellow and soft | Almost always too much water |
| Alocasia | Leaves turn yellow in winter, one by one | Often dormancy; then water less |
If you do not have a houseplant but a Yucca or olive tree with yellow leaves, read our separate blogs about yellow leaves on a Yucca and yellow leaves on an olive tree: those plants have different needs.
Why now: yellow leaves in autumn and winter
If suddenly more yellow leaves appear from October onwards, it usually has to do with the season. Much less light comes in, so the plant grows more slowly, uses less water and cannot maintain as many leaves. If you just keep watering, the soil stays wet for too long.
Then there is the heating, which makes the air drier. So do not place plants directly above the radiator and remove them at night behind closed curtains, where it can cool down considerably. Move them a bit closer to the window now that the light is weaker, and clean dusty leaves. Do not start feeding now to combat the yellowing: most plants barely grow and will not use the nutrients again until spring.
Should you cut off yellow leaves?
A leaf that is completely yellow will not turn green again. So feel free to cut it off, or gently pull it loose if it is already falling off on its own. As long as a leaf is still mostly green, it is better to leave it: it still provides energy to the plant. In case of mild deficiency discoloration, the leaf can even recover a bit after feeding.
Use clean, sharp scissors and cut close to the stem, without touching the stem itself. Afterwards, pick up cut and fallen leaves, especially if you have a cat or dog: varieties such as Monstera, Spathiphyllum, Epipremnum, Philodendron and Dracaena are listed by the ASPCA as toxic to cats and dogs.
Recovery plan: this is how you get your plant healthy again
If the plant really has a problem, follow these steps carefully. Many interventions at once cause extra stress.
- Today: feel the soil, check the underside of the leaf and look for the pattern in the diagnosis table. Stay away from fertilizer.
- With wet soil: lift the plant out of the pot. Healthy roots are firm and light in color, rotten roots are brown, limp and smell musty. Cut away rotten parts and place the plant in fresh, airy soil; our guide on repotting shows how.
- After that: change one thing, for example the location or watering rhythm, and remove completely yellow leaves.
- After two to four weeks: if no new yellow leaves appear, you are on the right track. If they still do, go to the next cause on the list.
- After one to three months: healthy new leaves are the real proof of recovery. In winter this can take longer, because the plant grows almost not at all then.
Frequently asked questions about yellow leaves on a houseplant
1. Can yellow leaves turn green again?
A completely yellow leaf will not; lightly discolored leaves due to a deficiency sometimes will. Therefore, pay particular attention to the new leaf: if that stays healthy, the problem is solved.
2. Why does my new houseplant get yellow leaves?
A new plant moves from a greenhouse with lots of light and humid air to a living room. A few yellow leaves in the first weeks are then normal. Give it a permanent place and do not repot it immediately.
3. Does too much or too little water cause most yellow leaves?
For houseplants, too much water is the most common cause, especially in autumn and winter. You can tell the difference by the soil: wet with soft yellow leaves points to too much, bone dry with crispy edges to too little.
4. Should I fertilize when there are yellow leaves?
Only if you have already ruled out water, light and pests. Give nutrients during the growing season and follow the dosage on the packaging, because too much fertilizer can damage the roots.
5. Can tap water cause yellow leaves?
That can happen with lime-sensitive varieties in an area with hard water. Lime gradually increases the pH of the soil, which makes the plant take up less iron and causes the young leaves to turn yellow between the veins. Use rainwater for those varieties.
6. When is a plant with yellow leaves beyond saving?
If the entire root ball is brown and mushy and the stems at the base are soft, recovery is unlikely. If there is still healthy green at the top, you can take a cutting for many varieties. As long as there are firm roots, the plant has a good chance.
