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A fungal disease that causes rust-coloured spots on leaves, stems and other parts of a plant.

A fungal disease of peach, almond and nectarine trees, which causes an increase in cell growth, resulting in thick, puckered and curled leaves. These will then change colour from green to yellow and dark red.

A fungal plant disease that causes a powdery coating on the surfaces of affected plants. Commonly occurs where plants have been exposed to damp conditions. It can be prevented by having good ventilation.

A general term for a number of fungal diseases, which are normally soil-borne, but also aerially transmitted. It affects a large range of plants, but commonly cereal cops. May cause damping off and blight, but can be controlled using fungicide.

A fungal disease that commonly affects fruit trees. Symptoms include spots on leaves, which then fall out, creating holes that give the appearance of being shot. Can be be controlled using fungicidal sprays.

in as much light as possible Prune greenhouse vinesPick off faded leaves from plants to prevent spread of fungal diseasesSow lettuce, leeks and onions in a heated propagatorSow greenhouse tomatoes for early pickings

Fungal rusts have been pretty prolific this year, which is not surprising, as they thrive in damp and muggy conditions.The film of moisture left on foliage after rainfall provides the perfect conditions for rust spores to germinate. Infections

This year has been a good year for tomatoes, but also a good year for blight. Blight, Phytophthora infestans, is a fungal infection, spread by spores in water droplets. Affected tomatoes develop brown, sunken patches, which spread to the stems

.AdamDampen the greenhouse floor, not the plants. Water dripping onto leaves encourages fungal disease, while water splashed onto fruit can ruin its appearance.More on greenhouses and plant careFitting an automatic vent opener for your greenhouseUsing bubble wrap

During an enjoyable day scouring for new plants at a horticultural trade show last week, several growers told me about a devastating new fungal disease killing off busy Lizzies in parks and gardens up and down the country.Impatiens downy mildew