The U.S. Department of Agriculture’s Plant Hardiness Zone Map, updated Wednesday, shows the impact that climate change will have on gardens and yards across the country.

The 2023 USDA Plant Hardiness Zone map, which was generated based on weather data gathered from 1991 to 2020, indicates that about half the United States moved into a warmer zone.

It included a map of eight hardiness zones, each differing by five degrees, and representing the lowest mean temperature for the coldest month of the year.

Itching to get your hands dirty in the garden? USDA releases new Plant Hardiness Zone Map The 2023 map uses data from 13,412 weather stations from 1991 to 2020.

About half of the country moved into a slightly warmer zone in the Agriculture Department’s new “plant hardiness” map, an important guide for gardeners. Climate change may be a factor.

Map developers from USDA and Oregon State University, updated the plant hardiness zoning for half of the country based on 30 years of climate data.

As the U.S. warms, planting zones are shifting north—affecting which plants farmers and gardeners can grow in their local area.

The “Plant Hardiness Zone Map,” an update of a 1990 static version, shifts temperatures up one 5-degree increment across much of the country, reflecting newer and more complete data, the USDA ...

About 80 per cent of Canada's land mass saw an increase in its plant hardiness zone, mostly of about half a zone to one full zone.

Looking for plant hardiness zones? This useful map shows which plants you can grow in your garden based on temperatures in your area.

This is a good time to answer a question about those confusing temperature maps. But first, let’s clear up just where we stand today before giving the gardening green light.