Why are my pear tree's leaves curling inward?

Updated July 19, 2017

The foliage of your pear tree can be an early warning system, if something is wrong with the tree. It's useful to be able to identify each specific problem, so that the correct course of action can be taken.

Leaf Midge

A common pest of pears, leaf midges are tiny black grubs that cause the edges of the leaves to roll upward. Young foliage is more likely to be attacked than older leaves. The affected leaves may turn red and drop. Control is difficult, as the grubs are protected from spray by the curl. Any affected leaves should be picked off and burnt.

Greenfly and Aphid

Several species of greenfly can attack pears. Some greenfly can cause yellowing and curling of leaves. The rosy leaf-curling aphid can cause a distortion and reddening of foliage. They attack all plant growth, but tender foliage is most vulnerable.

Leaf Blister Mite

These microscopic mites leave foliage spotted with yellow or red blisters, and they can cause the leaves to curl. Affected leaves may fall early and fruit may be blistered. Any infected leaves should be removed and destroyed.

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About the Author

Emma Hall has been writing articles since 2008. She grew up within the market gardening community and spent 10 years in horticulture. She has begun researching more ecological ways of gardening and has work published on websites relating to gardening and travel. She has A-Levels in English and film studies.