“The USDA plant hardiness zone map gives us an idea of our average high and low temperatures,” says McClure. She comes from a horticultural family and manages about 100 volunteer master gardeners ...

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.

The new map, created by USDA's Agricultural Research Service and Oregon State University, is based on 30 years of data from 13,412 weather stations, almost twice as many as the old map.

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 ...

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 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.

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 ...

Zones 2–10 were further subdivided into two 5-degree half zones termed “a” and “b.” Others, like the Arbor Day Foundation and Sunset, have since published their own plant hardiness maps, but the USDA ...

USDA releases new Plant Hardiness Zone Map The 2023 map uses data from 13,412 weather stations from 1991 to 2020. Cheryl McCloud. USA TODAY NETWORK - Florida.

The 2023 USDA Plant Hardiness Zone Map, which helps determine what plants are most likely to survive harsh temperatures, divides the country into 13 zones, each representing a band of 10 degrees ...

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 ...