I admit I have been a little overzealous in my love for the rose flower. I have tended to over a dozen varieties of rose plants in my pots and yard. I now have a bed of roses of about 15 varieties. However, once upon a time, due to my hectic work schedule, my plants got neglected. Some of my rose plants died due to black spots, while some others due to powdery mildew. From what was left of my garden, I faced a huge problem of overgrown rose bushes.