Skip to content
Pocket Botanist
Get the app

Coral Bells · Heuchera sanguinea

What are these pests on my Coral Bells?

Coral Bells are generally tough, but they can attract specific pests that affect their health. Check the undersides of leaves and the soil line for signs of activity.

Not sure it's this? Check a photo of your plant for free

pests on a plant
Photo: Jules Verne Times Two, CC BY-SA 4.0

Check these first

  1. Examine the leaf edges for irregular notches.
  2. Look for white dust on the top of the leaves.
  3. Check the soil for small white grubs.

Likely causes

  1. Vine Weevil

    Most likely

    How to tell: Adult weevils notch the edges of leaves, while larvae feed on roots below the surface.

    What to do: Apply beneficial nematodes to the soil to target the larvae. You can also pick off adult weevils at night using a flashlight.

  2. Powdery Mildew

    Most likely

    How to tell: A white, dusty coating appears on the surface of the leaves.

    What to do: Improve air circulation around the plant by thinning out crowded foliage. Apply a neem oil spray or a fungicide labeled for powdery mildew once a week until it clears.

Pests 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.

Download on the App StoreGet it on Google Play

When to worry

If the plant is losing significant foliage or collapsing, act immediately. Small amounts of powdery mildew are common in humid weather and are usually manageable.

Stopping it coming back

Keep the area around your plants clean and ensure good airflow to prevent fungal issues.

Coral Bells: pests? 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.

Download on the App StoreGet it on Google Play

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

Questions people ask

Are these pests harmful to my other plants?
Yes, vine weevils can spread to other container plants. It is best to isolate the affected Coral Bells until you have treated the infestation.
Can I wash off the white dust?
Washing the leaves can help temporarily, but it does not kill the fungus. Use a fungicide to ensure the infection does not return.

Guides to these causes

More problems with Coral Bells

Back to the Coral Bells guide

This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.