The Plant Hardiness Zone Map is based on the average annual extreme minimum winter temperature, displayed as 10-degree F zones ranging from zone 1 (coldest) to zone 13 (warmest), the USDA notes.

The Plant Hardiness Zone Map is based on the average annual extreme minimum winter temperature, displayed as 10-degree F zones ranging from zone 1 (coldest) to zone 13 (warmest), the USDA notes.

And last week, the USDA confirmed it by releasing an updated climate zone map for 2023. For many gardeners, that means a change in growing zones. Skip to Main Content ...

The Plant Hardiness Zone Map is based on the average annual extreme minimum winter temperature, displayed as 10-degree F zones ranging from zone 1 (coldest) to zone 13 (warmest), the USDA notes.

Hardiness Zones 101. The USDA Plant Hardiness Zone Map consists of 13 individual zones that take in all of the contiguous United States, plus Alaska, Hawaii, and Puerto Rico.

The United States Department of Agriculture (USDA) released a new version of its Plant Hardiness Zone map, the first update since 2012.. This new map is a tool used to help gardeners and growers ...

The map is divided into full zones based on average yearly minimum winter temperatures, with each zone representing ranges of 10 degrees Fahrenheit and half zones of 5 degrees Fahrenheit.

According to the USDA, the map is also based on 30-year averages of the lowest annual winter temperatures at the specific locations, and split into 10-degree and 5-degree zones and integrates data ...

The map and its zone system are designed to help gardeners and farmers understand a plant’s ability to survive the winter and thrive where they live. 1 weather alerts 1 closings/delays Watch Now ...