21 Best Shrubs For Zone 4
USDA Zone 4 is one of the coldest plant hardiness zones in the contiguous United States, defined by average minimum winter temperatures ranging from -30°F to -20°F (-34.4°C to -28.9°C). This zone spans across northern regions of the country, including parts of Montana, Minnesota, Wisconsin, and New England. The USDA Plant Hardiness Zone Map helps … Read more