Should I cut off all spotted leaves?

Yes, removing infected leaves helps stop the spread of fungus. Always sanitize your scissors with alcohol between cuts.

If it is late blight, it can be fatal if left untreated. Act fast to remove infected parts and keep the plant dry.

Why does my wild potato have dark spots? Causes and fixes

Check these first

Check if the soil is soggy or waterlogged.
Examine the spots to see if they are soft or dry.
Ensure the plant has good airflow.

Likely causes

Late Blight
Most likely
How to tell: This fungal infection causes dark, water soaked spots on leaves and stems. It spreads rapidly in cool, humid conditions.
What to do: Remove and destroy all affected leaves immediately. Improve air circulation around the plant and avoid getting water on the foliage.
Overwatering
Possible
How to tell: Spots may appear as yellow or brown patches that feel soft or mushy. The soil stays wet for too long.
What to do: Let the top inch of soil dry out completely before watering again. Ensure your pot has drainage holes so excess water can escape.

Leaf spots on other plants

Find out what's wrong with your wild potato

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

Worry if the spots are spreading quickly across the entire plant. Small, isolated spots are often just minor cosmetic issues.

Stopping it coming back

Water only at the base of the plant to keep leaves dry and maintain good spacing between plants.

Wild potato: spots? Check yours with a photo

Every plant is a little different. Take a photo of your wild potato 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 all spotted leaves?: Yes, removing infected leaves helps stop the spread of fungus. Always sanitize your scissors with alcohol between cuts.
Is my plant dying?: If it is late blight, it can be fatal if left untreated. Act fast to remove infected parts and keep the plant dry.

Why does my wild potato have dark spots?