Usda Plant Hardiness Zones 2024 Pdf. Plant hardiness zones are geographical regions defined by their minimum growing temperatures to help gardeners determine which plants are most likely to thrive in their area. The usda recently updated their plant hardiness maps, due to the warming temperatures in both summer and winter.

But you may need to make some changes. Plant hardiness zones are geographical regions defined by their minimum growing temperatures to help gardeners determine which plants are most likely to thrive in their area.