The 2023 USDA plant hardiness zone map shows the areas where plants can be expected to grow, ... Ancient fault line poses future earthquake hazard in Canada's North. Jul 16, 2025. Load comments (0 ...

The United States is divided into 13 different plant hardiness zones, ... Warmer starts to winter keep the colder air over northern Canada and the Arctic Circle bottled up early in the cold season.

The USDA’s winter hardiness zone map has long been the ... The new Plant Hardiness Zone Map reveals that about half of the ... and divides the continental U.S. and Canada into 10 zones, ...

Zone 1 marks the colder regions of Alaska and Canada, while Zone 13 includes southern Mexico and ... and plant hardiness zones across the contiguous United States have moved up a notch and crept ...

The Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. ... 2000 in portions of Canada (Fillol and Royer, ...

A number of U.S. hardiness zone maps have been developed. The first one was produced at the Arnold Arboretum in 1927. This map divided the U.S. and southern Canada into eight zones based on 5 ...

The 2012 USDA Plant Hardiness Zone Map (PHZM) allows gardeners and growers to assess which plants are most likely to thrive at any given location, as well as view warming trends across various U.S ...

The USDA defines plant hardiness zones based on the coldest average annual temperature in winter at a given location. Each zone represents a 10-degree F range, with zones numbered from 1 (coldest ...