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Scale insects
Plants affected: Greenhouse and conservatory plants, especially those with thick, waxy or evergreen leaves. Citrus plants are a special favourite.
Symptoms: Tiny limpets clinging to stems or under leaves.
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Prevention/Control: Wipe off the insects with a cotton bud and meths, then wash the leaves with tepid water to remove the sooty mould that’s often associated with scale insect infestations.
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Greenfly
Plants affected: Pretty much everything!
Symptoms: Infestations of green, pink, cream or brown insects around the softest parts of the plant, usually the tips of shoots and the undersides of young leaves.
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Prevention/Control: Wipe greenfly off plants with your fingers or spray plants with soft soap or a pesticide containing pirimicarb.
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