Black and yellow spots on rose leaves
Black and yellow spots are appearing on my rose leaves. What is the cause of this?
Submitted by BHGPhotoContest

This is a fungal disease called blackspot of roses. It's most severe in hot, humid, rainy weather. Some varieties are quite susceptible to the fungus; others extremely resistant. You can spray susceptible plants with a fungicide to prevent development of the disease. (It requires repeated sprayings throughout the summer.) Or consider replacing your susceptible rose with one that has good resistance to the disease.

Answered by BHGgardenEditors
Community Answers (2)

I live in Scarsdale, NY and we had a very wet spring and summer.....consequently I have lost many roses to Black Spot. I have gathered up all the contaminated mulch and a layer of dirt under these roses but now what do I do with the diseased dirt and mulch? I have several large bags of it and I sense it should not go into my compost pile. Will garbage collection take dirt?
Submitted by robinbrynt