The USDA divides the United States into seven planting regions, known as hardiness zones, which were most recently updated in 2023.The maps below show these planting regions.

The new map, created by USDA's Agricultural Research Service and Oregon State University, is based on 30 years of data from 13,412 weather stations, almost twice as many as the old map.

Map: Who is — and isn ... Nearly three-quarters — or 130 communities — had until the end of 2024 to pass compliant zoning rules. And in January, ... Contact Us (617) 353-0909. info@wbur.org.