Leaf Spots, Miscellaneous

Rosa shows variable fungal leaf spots (Cercospora, Elsinoe, Cladosporium) with red margins and tan centers, progressing to yellowing and defoliation. Manage as you would black spot: space well, avoid dense shade, eliminate overhead watering, and rake fallen leaves at season's end. Remove infected foliage promptly.

In general, tactics used to manage black spot, powdery mildew, and/or rust will be effective on many leaf spotting fungi. Space or prune bushes to allow for good airflow.