Stop the presses! The U.S. Department of Agriculture just released a new version of its Plant Hardiness Zone Map, with an important change that could affect gardeners across the country. Have you ...

How is the map divided? The map is divided into 13 zones, with a 10°F change in temperature between each Zone. Out of the 13 Planting Zones, Zone 1 is the coldest and Zone 13 the warmest, with a ...

The 2023 map is about 2.5 degrees warmer than the 2012 map, translating into about half of the country shifting to a warmer zone.

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 ...

Northern parts of Montana, North Dakota and Minnesota are in the coldest zone in the U.S., Zone 3. To add a little more precision to the zone designations, each zone is divided into 5 degree ...

New federal map for what to plant reflects warming SETH BORENSTEIN, AP Science Writer Feb 13, 2012 Feb 13, 2012Updated May 14, 2019 0 ...