To get rid of black spots on roses, remove the leaf litter and prune the diseased canes. Secondly, apply fungicides to keep the disease at bay. You can also use neem oil to control the disease. Thirdly, another important method of preventing the black spot disease is by spraying a solution of baking soda and water on foliage. If your rose leaves have black spots, it is as a result of Black Spot disease and heavy infection sometimes defoliates can plant. Usually dark-brown to black leaf spots develop on the upper leaves, which becomes yellow and drop. Ways of preventing black spot disease includes adequate planting sites, pruning, and the use of resistant cultivars. Make sure you plant your roses in an area with plenty of sunlight and ventilation. Ensure good garden hygiene to prevent black spots in roses. In growing season, avoid overhead watering.