What does the USDA rating for trees encompass regarding temperature conditions?

The USDA rating for trees encompasses various temperature conditions, classifying them based on their hardiness. This hardiness zone map is designed to help determine which plants, including trees, will thrive in different climate conditions throughout the United States. It takes into account the lowest average winter temperatures an area experiences, which is fundamental for assessing a tree's ability to survive cold conditions.

Moreover, the rating system also acknowledges that different species may have specific heat tolerances, thus coupling their hardiness in cold climates with their tolerance for higher temperatures. This comprehensive approach includes noting both extremes—cold and hot temperatures—making it essential for landscape contractors and gardeners to understand the complete temperature range in which a particular species can flourish. This is crucial when selecting trees for planting in specific regions, ensuring that they can endure the climatic challenges they may face throughout the year.