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aphids on my pyracanthas, which are dealt with by a strong jet of water, and stripy mullein caterpillars on verbascum, which are easy to pick off.I mention all this because I came across a very ancient shed the other day with many of the original

isn't very old, it's not more than 20cm in diameter at the base, but the bark is rough and gnarled enough to provide the odd nook and cranny for overwintering ladybirds.Surprisingly, these are not the recent alien invader Harmonia axyridis

. It is the voracious appetite of the large larva that has given the harlequin ladybird, Harmonia axyridis, its bad reputation. Not only does it eat aphids, it also eats other insects, including other ladybird larvae and also lacewing and hoverfly larvae feeding

Grow summer fruiting raspberries, with Monty Don.Chris Beardshaw gives advice on how to grow blueberries and cranberries.Fight currant blister aphids.Grow new plants from seeds and berries.Browse a variety of fruit plantsChoose plants suitable to full sun

, thus exposing the bugs to predators. But they're not all bad, as some capsid bugs feed on small pests.a wide range of plants, including chrysanthemums, dahlias, fuchsias, apples, beans and potatoesspring, summerMore common garden pestsLeaf miner flyAphids

Pollen beetleFlea beetleRosemary leaf beetleWoolly aphids

Tiny sap-sucking scale insects. They are 1-6mm long, and their whitish, grey-brown shells are covered by protective, waxy scales. The insects don't cause too much damage unless they are present in huge numbers, but some excrete an unsightly, sticky

Turn over a leaf and you'll see 2mm long white flies. With a life cycle of just three weeks, whitefly breed very fast. Both adults and offspring are sap feeders and a severe attack will weaken a plant. They excrete the sticky excess, called honeydew

2007 will be remembered as a very good year for wasps. But before people start complaining about their vicious stings and bad tempers, I must point out that wasps are actually our friends. After birds and spiders, they are the most important insect

next year my plot will be free of aphids, brassica whitefly and countless other pests that survive mild winters, and multiply with a vengeance in early spring. Mild winters are a boon to many garden pests; pests such as whitefly can shelter in the folds