A fungus disease which attacks a wide range of plants, both outdoors and in the greenhouse, especially in damp, cold weather. Lettuce, tomato, grapes, strawberry, chrysanthemum, gooseberry, cyclamen and roses are among the crops attacked. Symptoms are grey, fluffy moulds, which turn black or brown later. In the greenhouse, careless ventilation can often lead to botrytis infection. Botrytis is by no means easy to keep in check once it has gained a foothold. Captan, thiram and salicyanilide sprays have been used as preventive treatments and manufacturers’ literature should be consulted to obtain the latest recommendations.

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