Us Planting Zones Map 2025

Us Planting Zones Map 2025. The map is a guideline, not a guarantee, and does not consider other factors. The usda released a new version of its plant hardiness zone map, which helps gardeners and researchers determine which plants are most likely to thrive at a.

Usda zones are based on averages, not isolated events, and plants can be killed if the temperatures in the winter dip too low regardless of what the new map says. It starts with 1a (alaska) and goes all the way up to 13b (puerto rico), and the mainland u.s.