Apples Covered in Dirty Film
For the past two years our Red Delicious and Cortland apples have been covered with a dirty film. What causes this and what can be done about it?
Sooty blotch and flyspeck are two fungal diseases that can cause the problem you describe. These diseases make the fruit unsightly but do not affect its flavor. Wash off the sooty covering before storing or eating. Infected skins can be removed before eating. Prune the trees to improve air circulation and reduce disease problems. If the problem continues you can apply a fungicide labeled for fruit trees in spring, and through the cool periods of fall. Be sure to read and follow all label directions before using these or any chemicals.
Related
Upcoming Live Events
& Webinars
March 20, 2024
FREE WEBINAR
Maximize the Beauty and Enjoyment
in Any Small Space
Register now
March 23, 2024
REALTORS Home & Garden Show
West Allis, WI
March 27, 2024
FREE WEBINAR
How to Start a Garden for Beginners
Register now
April 3, 2024
Garden Trends
Franklin Public Library, Franklin, WI
April 10, 2024
FREE WEBINAR
Container Gardening Throughout the Year
Register now
April 11, 2024
FREE WEBINAR
7 Steps to Managing Water Where it Falls in Your Yard
Register now
April 18, 2024
Be a Waterwise Gardener
Golden Rondelle Theater, Racine, WI
Register now
April 20, 2024
Pruning Hydrangeas and Other Shrubs
Pasquesi Home & Gardens, Lake Bluff, IL
April 27, 2024
Ridges & Rivers Book Festival
Viroqua, WI
April 28, 2024
Flowering Trees and Shrubs
Ebert's Greenhouse Village, Ixonia, WI
May 1, 2024
FREE WEBINAR
Ornamental Fruits and Vegetables
Register now
WATCH ON-DEMAND WEBINARS
Learn More