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-autumn.Treat the lawn with an insecticide containing imidacloprid from May to October.lawns, strawberries, brassicas, some ornamental plantsspring to autumnMore common garden pestsPea and bean weevilsCaterpillarsFlea beetleEarwigs

are your best allies. Ladybirds can be bought as a biological control, and you can also buy ladybird houses to encourage these helpful creatures to take up residence in your garden. They need time to tackle the problem, so don't expect them to hoover up

. In severe cases, growth becomes distorted, leaves curl up, the plant weakens and can die.Natural predators, such as birds, earwigs, ladybirds, lacewings, hoverflies, ground beetles, spiders and parasitic wasps are a gardener's best allies. Some

The rose leaf rolling sawfly injects a chemical into young rose leaves to cause them to curl protectively around her eggs. Within a week the eggs hatch into green caterpillars that start to eat their home. In mid-summer, leaving behind skeletonised foliage, they crawl down into t...

with purple stripes.Pick off the adult beetles and larvae by hand and destroy.Spray with an insecticide - thiocloprid or imidacloprid - between late summer and spring. Avoid using insecticide when the plants are in flower as bees may also be killed

above 10 celsius in the greenhouse you can use a biological control, such as the parasitic wasp, Encarsia formosa, which attacks the juvenile forms of whitefly.Sprays with products containing imidacloprid and thiacloprid, which are absorbed by the plants

or thiacloprid in midsummer. Both imidacloprid and thiacloprid are systemic pesticides, meaning they are absorbed into the plant and can be present in concentrated forms in the nectar and pollen of flowers. If you do use these chemicals, bear in mind that any

and squish them.Again, there's no real need to control the beetle, but you can kill them by spraying with a bug spray that contains imidacloprid or thiacloprid. Both imidacloprid and thiacloprid are systemic pesticides, meaning they are absorbed

containing imidacloprid or thiacloprid.euonymusmid-July, early September, winterMore common garden pestsWhiteflyLeaf miner flyMealybugsAphids

or they'll fly off.At the first sign of attack, spray plants with imidacloprid, thiacloprid or sunflower oil. Treatment is more effective on larvae than adults.lilies, fritillaries and Solomon's sealspring, summer, autumnMore common garden pests