Apple scab is one of the more common foliar diseases of trees and was a widespread problem across Wisconsin in 2024.

Various diseases affect fruit ... pluots, and cherries). Apple trees are commonly affected by fire blight, apple scab, fruit rots, rusts, and powdery mildew. Fire blight is a common problem in pears.

Fungicide treatments must be repeated each year to protect susceptible trees.

Common apple tree pests are aphids, codling moths, and apple sawflies; diseases like apple scab and powdery mildew can provide major difficulties. Frequent observation and quick response—such as ...

which is why a fungicide is needed to control apple scab disease, which causes lesions on leaves and fruit, and early yellowing and defoliation of trees. Because both insects and diseases can be ...

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In apple trees, diseases such as apple scab and powdery mildew thrive in humid, shaded conditions, while insects like aphids and codling moths prefer sheltered areas to hide in. Pruning increases the ...

Spring-bearing strawberry plants that were set out this spring should have blossoms pinched off. New plants have a limited ...