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Nail gall

By Gardeners' World on 18/10/2011 15:38:24

appear in summer on the upper surface of lime tree leaves. These growths, or galls, may be yellowish green or red. lime treesn/aMore common garden pests affecting fruit treesApple sawflyCurrant blister aphidsPear leaf blister miteAphids


Reversion

By Gardeners' World on 19/10/2011 14:00:12

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


Acer tar spot

By Gardeners' World on 10/10/2011 11:32:51

, 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


Viburnum beetle

By Gardeners' World on 19/10/2011 15:40:28

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


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