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 Plant Hardiness Zone Map reveals that about half of the country shifted to the next warmer half zone, when compared to the previous map, compiled in 2012.

The hardiness zone map is not a guarantee your plant will survive. It's important to understand that the USDA hardiness zone is an indication of which plants are most likely to thrive in a location.

Gardeners aren't surprised as USDA updates key map The USDA Plant Hardiness Zone Map helps home gardeners pick which plants to grow. But recently, roughly a quarter of the country has moved zones.

"There are dramatic changes," he says. There are 13 zones, each divided into A and B half zones. The lower the zone number, the colder the overall temperatures. "Ohio in 2012 was mainly in the 6s.

London has been gardening for 26-years, and she's seen her region warming. In the new map, London's region in central Arkansas has moved from zone 7b to zone 8a.

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.

The newest version of the map, released last November, is also based on three decades’ worth of data (1991–2020). And for the first time, the map is aligned with an interval of time known as a “ ...

The zones are displayed in 10ºF increments, and 5ºF half zones. To find the Plant Hardiness Zone at your location go to this link https://planthardiness.ars.usda.gov/.

Hardiness zones represent the average annual extreme minimum temperature during a 30-year period. In zone 5a, the lowest temperature on average was between minus 15 and minus 20 degrees Fahrenheit.

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

While many varieties are hardy in Zones 5 to 9, Zone 8 is one of the only environments that Spanish lavender (Lavandula stoechas) grows well in. Spanish lavender is unique from other varieties in ...