Will the white spots kill my plant?

Usually no, but it makes the plant look unsightly and can stunt growth. Treat it early to keep your plant healthy.

Can I use neem oil for the spots?

Yes, neem oil is an effective organic treatment for powdery mildew. Apply it in the evening to avoid burning the leaves in the sun.

Coral Bells: spots, causes and fixes

Check these first

Rub the white spots to see if they wipe off like dust.
Check if the plant is crowded by other garden neighbors.
Look for signs of high humidity around the base of the plant.

Likely causes

Powdery Mildew
Most likely
How to tell: A white, powdery substance covers the surface of the leaves and stems.
What to do: Remove the most heavily infected leaves to improve airflow. Spray the remaining foliage with a mixture of one tablespoon of baking soda in a gallon of water.
Poor Air Circulation
Possible
How to tell: The plant is crowded by other foliage or sits in a stagnant, humid corner.
What to do: Prune back surrounding plants to allow better airflow. Ensure your Coral Bells has enough space to breathe.

Leaf spots on other plants

Find out what's wrong with your coral bells

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

Powdery mildew is rarely fatal but can weaken the plant if left untreated for a long time. Treat it as soon as you notice the spots.

Stopping it coming back

Water at the base of the plant rather than overhead to keep the leaves dry. Space plants properly to ensure good air movement.

Coral Bells: spots? Check yours with a photo

Every plant is a little different. Take a photo of your coral bells 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

Will the white spots kill my plant?: Usually no, but it makes the plant look unsightly and can stunt growth. Treat it early to keep your plant healthy.
Can I use neem oil for the spots?: Yes, neem oil is an effective organic treatment for powdery mildew. Apply it in the evening to avoid burning the leaves in the sun.

Guides to these causes

Powdery Mildew

Why are there white spots on my Coral Bells?