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Nail gall

Symptoms

Pointed, tubular growths appear in summer on the upper surface of lime tree leaves. These growths, or galls, may be yellowish green or red.
Find it on: lime trees
Time to act: n/a

Overview

The pointed nail galls are caused by microscopic mites, which overwinter in the bark of lime trees and crawl on to the underside of the foliage in spring to feed. The mites secrete chemicals into the leaves causing them to produce the unusual projections into which the mites move to continue feeding during the summer. Infestations of mites and the nail galls they induce don't appear to affect the health of the trees and there's no way of controlling or preventing them.
Solution
Pointed, tubular growths appear in summer on the upper surface of lime tree leaves. These growths, or galls, may be yellowish green or red.



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Talkback: Nail gall
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audrey23 24/11/2011 at 15:29

I don't have any lime trees so I don't have this problem (yet). I have been looking at buying lime trees this Summer tho'. I saw this article and thought how strange it looked, not sure if it's put me off or not. I'll have to give it another thought.

Lise 24/11/2011 at 15:29

..Hi..I am learning to draw plants, flowers and trees...! I took some leaves from a tree near to where I live - I think its a Lime! Leaves
had waxy growths on stems..I opened one to find pale blue, tiny egg -like larva? moving around inside!! What are they??
Thanks, Lise