Should I use a fungicide?

Usually, removing the damaged leaves and fixing the environment is enough. Only use a fungicide if the spots continue to spread despite your changes.

Are these spots contagious to other plants?

If the cause is fungal, it can spread to nearby plants. Isolate your Joseph's coat until the spots stop appearing.

Joseph's coat: spots, causes and fixes

Check these first

Look for tiny insects on the underside of the leaves.
Check if the leaves stay wet for too long after watering.
Examine the spots to see if they are soft or dry.

Likely causes

Fungal leaf spot
Possible
How to tell: Small brown or black spots appear on the leaves, sometimes with a yellow halo.
What to do: Remove the affected leaves immediately to stop the spread. Improve airflow around the plant and avoid getting water on the foliage when you water.
Sunburn
Possible
How to tell: Bleached or scorched patches appear on the leaves that receive the most direct sun.
What to do: Move the plant to a location with filtered light or partial shade. If outdoors, provide a bit of afternoon protection.

Leaf spots on other plants

Find out what's wrong with your joseph's coat

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

Small, isolated spots are usually manageable. Worry if the spots are spreading quickly across the entire plant.

Stopping it coming back

Water at the base of the plant to keep the leaves dry and ensure good air circulation.

Joseph's coat: spots? Check yours with a photo

Every plant is a little different. Take a photo of your joseph's coat 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 use a fungicide?: Usually, removing the damaged leaves and fixing the environment is enough. Only use a fungicide if the spots continue to spread despite your changes.
Are these spots contagious to other plants?: If the cause is fungal, it can spread to nearby plants. Isolate your Joseph's coat until the spots stop appearing.

Guides to these causes

Leaf Spot

What are these spots on my Joseph's coat leaves?