Rake and destroy fallen leaves. Spray copper fungicide (Hi-Yield) or mancozeb (Bonide) three times at 2-week intervals starting at leaf unfurl in spring. Follow label.
Spray insecticide (Ortho Bug-B-Gon Max, Bayer Advanced Rose & Flower, Spectracide Rose & Flower) weekly, covering both leaf surfaces. Check local nursery for best product.
Managing Tar Spot on Maple Trees: Leaf Removal and Fungicide Timing
Black Spot Fungus on Plumeria: Trim, Sanitize, and Spray
Holly Scale Infestation: Oil or Systemic Insecticide
Orange Bumps on Oak Leaves in Florida: Likely Gall Insects
Identifying and Treating Powdery Mildew on Holly Trees
Red Leaf Blotches on Chanticleer Pear: Getting an Accurate Diagnosis
Black Sooty Mold on Holly: Control the Sucking Insects First
Maple Tar Spot: Spore Timing and Management
Oak Leaf Fungus at 5000 ft: Cosmetic Leaf Spot Management
Treating Powdery Mildew on Apple Seedlings
Dendrobium Leaf Spot Disease: Identification and Copper Treatment
Phalaenopsis Yellowing Leaves: Fungus from Evening Watering
Brown Spots on Climbing Rose: Black Spot, Not Grape Fungus
Curling African Violet Leaves with Fuzz: Fungal Disease or Cultural Stress?
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