The kind of plants you can grow have changed slightly in most regions of Canada according to the federal government’s latest ...

What is a plant hardiness zone? In the simplest terms, the plant hardiness zone map shows what can grow where. The zones go from 0 to 9, and each zone is divided into two: a and b.

Why a new plant hardiness map? Part of the reason lies with climate change. Incrementally, we’re getting warmer. The original version was developed by Agriculture and Agri-Food Canada in 1967.

The map is based on 30-year averages of the coldest winter temperatures at specific locations, and divides the continental U.S. and Canada into 10 zones, which are further divided into half-zones ...

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. The new Plant Hardiness Zone Map.

Comparing the 2023 map to the previous version from 2012 clearly shows that as climate change warms the Earth, plant hardiness zones are shifting northward. On average, the coldest days of winter ...

The colour-coded map of planting zones often seen on the back of seed packets is being updated by the U.S. government, illustrating a hotter 21st century.

The USDA Plant Hardiness Zone Map divides North America into 13 zones based on the average annual minimum winter temperature. In 2023, the USDA released an updated hardiness zone map in response ...