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

,greenhouse and house plantssummer, autumn, winterMore common garden pestsAphidsPhormium mealybugThripsWhitefly

The mullein moth, Cucullia verbasci, lays its eggs on verbascum, buddleia and figwort at the end of spring. Shortly after, from late spring to midsummer, the caterpillars demolish the foliage. Bad infestations can actually strip a plant. They then hide in the soil to pupate.Cater...

A fungal disease weakens the plant and can seriously reduce its flowering performance. The brown spots eventually grow together and develop grey centres. Infection is caused by air or water-borne spores entering the plant through damaged leaves. In wet weather the fungus spreads ...

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Summer pruning wisteria encourages the development of short-flowering spurs that will carry the long racemes of bloom in spring. The long vigorous shoots are cut back to a couple of buds from the base of the current season's growth. During initial training of young wisteria plant...

The large, beautiful caterpillar larvae of the elephant hawk moth has two pairs of eye markings, which are made even more prominent when it withdraws its head into its body. They are, typically, a blackish-brown colour but are sometimes green, and though their 'eyes' make them lo...

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

Lilies are bursting into elegant and colourful blooms at this time of year . It's a dramatic sight, and one you can prolong by simply removing the flowers as they fade.Lily plantsSecateursJuly - August10 minutesJuly - AugustTidy up the lily

.Plants are infested with tiny, sap-feeding, scale-like insects packed around the stems and leaves.First try to remove them with your thumbnail. If there are too many, use an insecticidal soap spray. Alternatively, leave them for the birds to pick off. In a greenhouse