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and air from reaching the leaves.Black or greyish-green mould spreads across sticky honeydew deposited on pepper plants by aphidsThere's no control for sooty mould, but you can control the aphids. Outside, natural predators such as birds and ladybirds

, which can encourage sooty mould to develop. It's more of a problem in urban areas where temperatures are higher.Scrape the eggs off by hand and move them to an alternative tree, or destroy them.Spray with an insecticide containing deltamethrin

, auberginessummer to autumnCommon fruit and veg problemsTomato blightTomato leaf mouldTomato splittingFrost damage on tomatoesLeatherjackets - brassicas and strawberriesSooty mould - peppers and greenhouse plants

problems affecting fruit bushes and treesGrey mould on soft fruitsApple sooty blotchPeach leaf curlBrown rot on apples, pears and plums

's more prone to infection. Spray with myclobutanil.marrows, courgettes, pumpkins, squashsummer, autumn, winterCommon fruit and veg problemsTomato blightGooseberry mildewGrey mould on soft fruitsSooty mould

of the plant, attracting black sooty mould, which inhibits photosynthesis and deprives the plant of energy.Young tender growth is vulnerable to aphid attack. These tiny insects (1mm-7mm long) are usually green or black and breed fast, smothering the plant

of plants. They debilitate the plants and secrete a sticky, sugary honeydew that covers the leaves, which often results in further problems, such as sooty moulds.Infestations of white, waxy insects on indoor and greenhouse plants, along with sticky honeydew

, sugary substance (called honeydew) which encourages the growth of a fungus called sooty mould. Early summer is the best time to tackle the problem, when the newly hatched insects are crawling around looking for a place to feed and settle

, onto lower leaves where it encourages black sooty mould to grow. If left, this weakens the growth of the plant.When you brush past your plants in the greenhouse clouds of tiny white flies fill the air.Hang up yellow sticky traps to catch flying adults