A hardiness zone is a geographic area with a similar average minimum temperature. The map is based on the average annual extreme minimum temperature, so people in those areas know which plants can ...

But before dropping money on new plants, it’s important to note that the USDA is adjusting some of its zones that help with deciding the types of flowers to plant. K-State Research and Extension ...

But before you buy your seeds, there's some very important information you must know: The USDA just updated their plant ...