Why are my calathea leaves turning yellow?
Check the watering first on a calathea with yellow leaves. Too little water and too much water can both cause yellowing. Push a finger into the soil, then look at the pot base, the light, drafts and the leaf undersides. The pattern of yellowing often helps point to the cause.
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Is watering the reason my calathea is yellowing?
Watering is a common place to start. NC State Extension says yellow leaves can come from underwatering or overwatering. Check the soil before you change anything.
The Royal Horticultural Society (RHS) says to push a finger into the growing medium. Feel how moist it is a few centimeters down. If it is very dry, water the plant. The RHS also says to check moisture and water only when needed, not at set times. Our guide on how to tell if a plant needs water covers this check.
- Too dry: the RHS says older leaves at the base of a dry plant often yellow and fall first.
- Too wet: the RHS lists old and new leaves yellowing and dropping together, browning in the middle of leaves, moldy patches, stem rot and dark, mushy roots.
Overwatering can look like underwatering. The RHS says to lift the plant out of its pot and see if water has collected in the base. Tip away any excess. NC State Extension says overwatering can lead to root rot. For a side-by-side look, see overwatering vs. underwatering.
What does the yellowing pattern tell me?
Different causes can leave different patterns on a calathea. The University of Maryland Extension says that watching the pattern and how it changes helps find the cause. Use the table as a rough guide, not a verdict.
| What you notice | What to check | A useful next step |
|---|---|---|
| Older leaves at the base yellow and fall first | The soil may be too dry. The RHS says older leaves at the base of a dry plant often yellow and fall first. | Feel the soil below the surface and water if it is very dry. |
| Old and new leaves yellow and drop together | The plant may be overwatered. The RHS lists this among the signs of overwatering, along with browning mid-leaf, stem rot and dark, mushy roots. | Lift the plant out and check the pot base. Tip away any excess water. |
| Lower leaves yellow and fall, with weak, spindly growth and pale leaves | The plant may not be getting enough light. The RHS lists weak, spindly growth and pale leaves as signs of this, and says lower leaves may also yellow and fall. | Move the plant to a brighter spot out of direct sun. |
| Yellowing with dry leaf edges | Drafts can cause yellowing and dry leaf edges, says the RHS. It adds that plants near heat sources like radiators often get scorched leaves. | Move the pot away from vents, radiators and drafty windows. |
| Speckled or silvery yellow leaves with fine webbing | Possible red spider mites, says the RHS. | Look closely at the leaf undersides. See the guide to spider mites. |
Could light, cold or dry air be the cause?
Yes, the room itself can cause yellowing. Iowa State University Extension and Outreach says yellowing, browning and leaf drop have many possible causes. It helps to know the ideal conditions for your plant.
The RHS says calatheas grow best in a bright spot out of direct sunlight. It lists weak, spindly growth and pale leaves as signs of too little light. Iowa State says light that is too high or too low will cause leaf drop. So will a sudden change in light. Our guide to how much light a houseplant needs can help you judge your spot.
Cold can matter too. The RHS says these tropical plants are easily damaged by cold. NC State Extension says the plant is not tolerant of temperatures below 61 degrees Fahrenheit. Iowa State says to box or bag tropical houseplants in below-freezing air, even briefly, such as on the way home from a store.
Dry air is another possibility. The RHS says low humidity usually browns leaf tips and edges. Iowa State says humidity is too low for plants in most homes. It suggests a humidifier, a pebble tray, a terrarium or grouped plants to raise it.
Could pests, feeding or water quality be involved?
They can be, but check the environment first. The University of Maryland Extension says symptoms are often blamed on insects or diseases when the real problem is in the plant’s environment.
NC State Extension says to watch for aphids, scale, mealybugs and spider mites on this plant. Check the leaf undersides, and see our overview of common houseplant pests. The RHS says fungus gnats can be managed by watering from the base, cutting back watering to avoid soggy compost, or repotting into fresh compost. NC State Extension says dust slows photosynthesis, so clean the leaves with a clean cloth.
If you decide to use a treatment product, follow the product label and choose one labeled for houseplants.
Feeding and water type can also play a part. Iowa State says under-fertilized plants often yellow and drop leaves. NC State Extension says light feeding with a diluted fertilizer in the growing season helps the plant thrive. The RHS says tap water in a hard water area can lead to nutrient deficiencies. It says room-temperature rainwater is preferable when possible.
Plant Doctor, an AI plant diagnosis app for iPhone, uses three photos of the plant to point to the most likely cause, with the evidence behind it.
What should I do with the yellow leaves?
The RHS says completely yellow leaves will not recover. You can cut them off. Keep leaves that are mostly green until the plant grows a fresh flush of leaves. The RHS says removing them sooner could delay recovery.
The University of Maryland Extension says yellowing is often one of the first signs of plant stress. It also says yellow leaves may turn brown if the condition causing the stress is not corrected.
Iowa State says a few older inner leaves dropping on an otherwise healthy plant is nothing to worry about. For severe or unclear cases, ask a local nursery or your extension service.
Calathea questions
Should I cut off yellow calathea leaves?
The RHS says completely yellow leaves will not recover and can be cut off. It says to keep leaves that are mostly green until fresh leaves grow.
Is one yellow leaf normal?
It can be. Iowa State says a few older inner leaves dropping on an otherwise healthy plant is nothing to worry about.
Will yellow calathea leaves turn brown?
They may. The University of Maryland Extension says yellow leaves may turn brown if the condition causing the stress is not corrected.
Sources and further reading
Care guidance checked against the sources below. Plant Doctor’s app examples are separate from these references; the institutions do not endorse the app.
- Royal Horticultural Society — How to grow calatheas
- NC State Extension — Goeppertia picturata Play pronunciation
- NC State Extension — Goeppertia insignis Play pronunciation
- Royal Horticultural Society — How to help a poorly houseplant
- University of Maryland Extension — Yellowing Leaves on Indoor Plants
- Iowa State University Extension and Outreach — Diagnosing Houseplant Problems from Improper Environmental Conditions
Drafted with AI from the sources below; each plant-specific fact checked automatically against its source on 24 October 2026.
This guide offers general plant-care information. A photo cannot confirm every cause; a local nursery or extension service can help with severe or unclear cases.