Which fruit trees are commonly recommended for home gardens in Wisconsin due to cold tolerance, and what is one key disease concern for apples in Wisconsin?

• A. Apple, cherry, and pear are common; Fire blight is not a concern for apples.
• B. Plum, apricot, and nectarine are common; rust is a concern for apples.
• C. Apple, orange, and grape are common; citrus canker is a concern for apples.
• D. Apple, cherry, and pear are common; apples have diseases such as apple scab.

Answer: (C)

Wisconsin gardeners choose fruit trees that can withstand cold winters, so apples, cherries, and pears are commonly recommended for home gardens in this region. These trees have a proven track record of surviving harsh winters, adapting to local soils, and producing reliable harvests with the right care.

A key disease concern for apples in Wisconsin is apple scab. This fungal disease thrives in cool, wet springs and creates olive to dark brown spots on leaves and fruit, which can reduce photosynthesis, yield, and fruit quality. Management typically involves selecting scab-resistant varieties when available, keeping fallen leaves and infected fruit cleaned up to reduce inoculum, and applying appropriate fungicides or sprays according to local guidelines.

Citrus-related issues, like citrus canker, are not relevant to Wisconsin apples, and citrus crops are not generally grown there due to the climate. In this context, the combination of common cold-hardy tree choices with a primary concern like apple scab best reflects Wisconsin home-garden realities.