How to Treat Apple Scab Without Chemicals
- 1). Apply a 5-percent urea solution to the leaves of the apple tree in the fall. This will speed up leaf drop of the tree.
- 2). Rake up the infected leaves from under the tree as the leaves fall. Dispose of the leaves in the trash. This will prevent the spread of the scab.
- 3). Water the tree in the early morning so the plant will have time to dry before nightfall. If you have sprinklers nearby, make sure they do not point at the apple tree. Dry environments prevent the scab spore from germinating.
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