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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

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

, 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

in a cool, lightly shaded spot.AdamWhen it's flowered, cut back the begonia and move it indoors. The ferns can be repotted or enjoyed in the garden.More planting combinations for shadeGrowing shade-loving acer and ajuga.Grow plants for shade

flowerheads in summer. It will perform equally well in a sunny border or a container.Jarava ichuThis easy-to-grow bearded iris, with butter yellow and lavender petals, will flower from late-May to mid-June.Iris 'Lullaby of Spring'This short, smoky yellow iris

that the only way to tackle a shady patch is to turn it into a foliage garden filled with box, ivies and ferns. But too many dark greens can make a shady area look gloomy. Instead, use them for background structure and texture, then bring the area alive

insects are up to 5mm long and can be found on the main trunk and branches. They drop off in summer, leaving white clusters of eggs. Little damage is done to the host plant, but the insects can look unsightly. They suck sap from plants and produce honeydew

, while general growth and vigour is poor. Also learn about powdery mildew on roses.In summer, a white powdery coating covers the leaves and possibly the shoot tips and flowers too. Leaves may then become discoloured and distorted, with poor growth

The autumnal colours of ornamental cabbages work well with the pink flowers of sedums in this striking pot display. They are softened by the wispy grass and frothy white blooms of the aster. August - SeptemberSeptember - October20 minutes

have to trim its fig-like leaves to let the Spanish flag flowers truly shine. Set off these two annual climbers to perfection by planting delicate but colourful bedding plants around the base of the display. Don't be tempted to plant out tender young