Is powdery mildew fatal?

It is rarely fatal, but it can weaken the plant and make it look unsightly. Treat it early to prevent it from spreading to other plants.

Do I need to remove the damaged leaves?

Yes, removing heavily damaged leaves helps reduce the spread of fungus and keeps the plant looking fresh.

What are these spots on my Pink Splash leaves?

Check these first

Look for a white, powdery substance on the leaves.
Check the undersides of the leaves for slugs or snails.
Examine the soil around the plant for slime trails.

Likely causes

Powdery mildew
Most likely
How to tell: You will see a white, dusty coating on the surface of the leaves.
What to do: Improve air circulation by thinning out crowded plants. If it persists, apply a neem oil spray in the early morning or late evening.
Slug or snail damage
Possible
How to tell: There are irregular, ragged holes in the leaves, often with slimy trails nearby.
What to do: Handpick the pests in the evening when they are active. You can also place shallow dishes of beer or use iron phosphate bait around the base.

When to worry

Small, isolated spots are usually manageable. Worry if the entire plant is covered in white powder or if the foliage is being eaten away rapidly.

Stopping it coming back

Water at the base of the plant rather than overhead to keep the leaves dry. Keep the area free of debris where slugs like to hide.

Not sure which one it is? Photograph your pink splash variegated deadnettle.

This page lists the usual causes. Pocket Botanist looks at your actual leaf and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

Get the app

Questions people ask

Is powdery mildew fatal?: It is rarely fatal, but it can weaken the plant and make it look unsightly. Treat it early to prevent it from spreading to other plants.
Do I need to remove the damaged leaves?: Yes, removing heavily damaged leaves helps reduce the spread of fungus and keeps the plant looking fresh.