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Young apple and pear trees are particularly vulnerable to winter frost, which can cause cracks and damage to their bark. A protective wrap made of light-colored material can help reflect sunlight and reduce the risk of sunburn and frost cracks. This method is especially recommended for trees in their first two years after planting. It's important to remove the wrap in spring after the danger of severe frost has passed. While plastic wraps are commonly used, thick light-colored paper or aluminum foil can also be effective. However, these wraps do not protect against rodents that may gnaw on the bark during winter. Proper installation and periodic checks of the wrap are essential to ensure the trees remain healthy throughout the winter season.