QuestionIs there any good fix for blackspot on roses? AnswerRose blackspot is a fungal infection that leads to yellowing and ugly black markings of the leaves. When pruning the roses in winter/early spring, always prune to outward-facing buds to create an open centre to the rose bush. Drench the plant with a solution of copper sulphate and water, ideally during April, but it is still not too late. This is a broad-spectrum, organic fungicide that will help to prevent infection in the first place.

Source: Irish Examiner June 06, 2021 07:52 UTC