Should I cut off the yellow leaves?

Yes, you can snip them off with clean scissors. They will not turn green again and removing them helps the plant focus energy on new growth.

Does my plant need fertilizer?

If the leaves are yellow but the soil is dry, the plant might be hungry. Use a balanced liquid fertilizer once a month during the growing season.

Mandevilla: yellow leaves, causes and fixes

Check these first

Check the soil moisture with your finger.
Look at the light levels in the plant's current spot.
Examine the leaves for tiny pests that might be sucking the sap.

Likely causes

Overwatering
Most likely
How to tell: The leaves turn yellow and feel soft or limp. This often happens if the soil stays wet for more than a week.
What to do: Reduce your watering frequency. Ensure the top inch of soil is dry before you add more water.
Low light
Possible
How to tell: The plant looks pale and the leaves yellow slowly over time. The vines may also become thin and stretched out.
What to do: Move the plant to a spot with brighter, indirect light. A south or west facing window is usually best for this plant.

Yellow leaves on other plants

Find out what's wrong with your mandevilla

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

When to worry

It is normal for the oldest leaves at the bottom of the vine to yellow and drop occasionally. Worry if you see many leaves yellowing at once or if the new growth is affected.

Stopping it coming back

Maintain a consistent watering schedule and ensure the plant gets plenty of bright light. Rotate the pot occasionally so all sides get equal sun.

Mandevilla: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your mandevilla and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

Get the app · Or check it from a photo now, free

Questions people ask

Should I cut off the yellow leaves?: Yes, you can snip them off with clean scissors. They will not turn green again and removing them helps the plant focus energy on new growth.
Does my plant need fertilizer?: If the leaves are yellow but the soil is dry, the plant might be hungry. Use a balanced liquid fertilizer once a month during the growing season.

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