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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

might try to revert to the original, all-green leaves.The only solution is to cut back any all-green growth to leave just the desired variegated foliage.any variegated plantall year roundCommon problems affecting plantsMagnesium deficiencyRustBlack spot

, but the health of the tree won't suffer.An outbreak of shiny black blotches, edged in a ring of yellow, disfigure acer leaves in early summer. This can lead them to fall prematurely.Rake up and dispose of all fallen infected leaves. As a preventative measure use

later in the year adult beetles emerge, worsening the problem. Holes in the leaves of viburnums caused by the larvae and adults of viburnum beetle. Plants can be completely stripped of foliage and can emit a foul smell, which is thought to be caused