PlantPal

Why are the leaves curling?

Check the newest leaves and their undersides before you change the care routine.

Aphids on a curled guelder rose leaf; curling has many possible causes.
Aphids on a curled guelder rose leaf; curling has many possible causes. Photo: S. Rae from Scotland, UK · CC BY 2.0 · Resized and converted for display.

What to check first

Look inside the curl for insects, fine webbing or sticky residue. If there are no pest signs, feel the mix and think about recent changes such as direct heat, cold drafts or stronger light.

What to do now

If you find pests, separate the plant and match the response to the pest. If you find a dry or waterlogged pot or a harsh draft, correct that first. Avoid spraying for curl alone.

What to watch next

Check how the next leaves open. Old curled leaves may stay that way. New distortion despite stable conditions calls for another check for pests or root trouble.

Sources