What is the significance of the USDA's Plant Hardiness Zone Map?

The USDA's Plant Hardiness Zone Map is significant because it helps determine suitable plants for specific locations. By classifying regions based on the average annual minimum winter temperature, the map allows gardeners, landscapers, and farmers to select plants that are likely to thrive in their specific environment. Each zone indicates the types of plants that can survive winter conditions in that area, making it a vital tool for anyone involved in agriculture or horticulture. This information is crucial for making informed decisions about planting, ensuring that selected species are well-adapted to local climate conditions and reducing the risk of plant failure due to temperature extremes.

Other options, while related to plant growth and agriculture, do not specifically address the primary use of the Plant Hardiness Zone Map, which is focused on temperature-based plant suitability.