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A birch tree makes an ideal focal point and can be grown in a large container. Its silver-white bark and delicate foliage combine with the handsome, soft shield fern and evergreen heuchera leaves for a wonderful woodland combination

Small treesSmall trees can be used to create impact in gardens of all sizes, adding height, structure and year-round interest. We caught up with David Hurrion, Acting Horticultural Editor of Gardeners' World magazine, to discover his top 10 trees

's not confirmed how the virus is spread, but sap-sucking insects, nematodes and gardening tools, such as pruning knives, are likely contenders.Canna leaves develop pale spots and streaks, as well as a distorted, crinkly look, while flowers may also become

insects - which have a fluffy white covering - carry on feeding on the sap, prolonging the problem. Prolific breeding in summer means the symptoms don't disappear. Young, winged, sap-feeding insects attack young bay foliage, discolouring and distorting it

Hungry, voracious caterpillars can be found in a wide variety of colours and sizes. Some feed on fruits, roots and stems, but the likes of the cabbage white butterfly, hawk moth and winter moth feed on leaves. Although they may at first seem

in distorted growth. The adult froghoppers (which don't produce any spit) are 6mm long and bright green, with large eyes and a blunt-shaped head, but they're rarely seen because they hop away on their strong back legs at the first sign of danger.Blobs of white

The sap-feeding scale insect Unaspis euonymi is particularly attracted to Euonymus japonica, although it will feast on other evergreen euonymus too. The white males congregate on the leaves, but the brownish-black females live on the bark, making

on foliage.Yellow to white mottling of upper surface of leaves. Whole leaf may become puckered and turn brown at the edges.Cover a piece of stiff card with grease or contact adhesive and hold it above the infected plants while lightly brushing the foliage

on dealing with mothsCaterpillarsCabbage white caterpillarsElephant hawk MothCodling moth

, and is able to colonise new areas by producing seed.Spreading perennial plant that produces mats of foliage. Easily recognised by pretty, small, white-petalled flowers with a round yellow centre.Dig or grub out daisies from lawns using an old kitchen knife