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When apple trees are in flower, the sawfly, Hoplocampa testudinea, lays its eggs in the developing fruit. In June, the larvae tunnel their way under the skin of the fruit and into the core, causing the apples to fall. When they're ready, they tunnel

myclobutanil as the active ingredient.apples, pearswinter, spring, summerMore common apple and pear trees problemsApple sawflyApple sooty blotchPear leaf blister mitePear wasp damage

The cause of the splits is invariably irregular watering. When the tree suddenly gets a hefty drink following a period of drought, the apples quickly expand, which often leads to the skin cracking. The fruit usually produces a corky, scab

Apple sooty blotch is caused by an overwintering fungus, which is typically found on trees or branches growing in shade and damp. It creates a splatter of dark, sooty spots all over the skin of the fruit, although the flesh isn't affected at all

can cause fruit to split, will help reduce the likelihood of an attack. Spray the tree with myclobutanil during the summer.apples, pears, plumssummer, winterCommon problems affecting fruit treesPear leal blister mitePear wasp damageApple and pear scabApple

the problem long-term but deals with the aphids in the short-term.Spray the tree with thiacloprid the moment you spot any aphids. Small numbers are far more easily tackled than large, rapidly multiplying infestations.apples, crab apples, cotoneaster, hawthorn

in close proximity. Where trees are suffering stress as a result of drought or waterlogging, they may be more liable to infection. Canker may also infect fruit, so they rot on the tree before harvesting or when in store. If your trees have suffered

by hand any affected leaves and shoots. pearsspring to autumnMore advice on growing pearsTreating apple and pear scabPreventing pear wasp damageDealing with codling moth on fruit treesMonty's favourite fruit varieties

Wasps love feeding on soft, juicy fruit. They can break through the skins of grapes, peaches and plums, and quickly nibble out sizeable cavities, but fruit with tougher skins such as apples and pears must first be broken open by pecking birds before

-the-counter solution.pearssummer, autumn, winterMore advice on growing pear treesRemoving codling moth from pear treesTreating apple and pear scabPreventing pear leaf blister mite