Picture this: you’re scrolling through seed catalogs in January, dreaming of tomatoes and dahlias, when you spot those mysterious little numbers. Zone 5. Zone 8. What do they mean, and why does every plant label seem to whisper about them?
The USDA Plant Hardiness Zone Map divides North America into 13 zones based on average annual minimum winter temperatures. Each zone represents a 10-degree Fahrenheit difference, helping you figure out which perennials, trees, and shrubs can survive winter in your garden. For Canadian gardeners, this map matters just as much as our own Canadian zone system because so many seed companies, …




