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. Contributed / USDA ...

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.

Trees: White spruce (Picea glauca), quaking aspen (Populus tremuloides) ... In 2023, just over a decade after the last update, the USDA republished the plant hardiness zone map.

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.

An updated plant hardiness zone map released by the USDA last month shows nearly half of the country is now classified in a "warmer" zone than it used to be. That includes parts of Southeastern N.C.

The plant hardiness map contains 13 zones, representing 10-degree-F ranges. Each zone is further subdivided into two half zones, a and b, representing 5-degree ranges. Zone 1 starts in Alaska, and ...

What's new about the new map? The new data is based on 1991-2020 GIS data collected from over 13,000 weather stations.Zones 12 and 13 were added in Puerto Rico and Hawaii and can help northern ...

The 2012 map had me in Zone 8a (10 to 15 degrees) — while way back in 1990, I was in Zone 7b (5 to 10 degrees). Another example: Williamsburg, ZIP code 23185, has seen its zone change from 7a to ...

To get started, take a look at the U.S. Department of Agriculture Plant Hardiness Zone Map and see where your garden sits. When this map was updated in 2023, most locations in Louisiana became one ...

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/.

If you are wondering whether that shrub, flower, or tree that you saw in a magazine or catalog will grow well in your garden, using a hardiness zone map is your best bet to ensure success.

Plant hardiness zone map an important, but not tell-all tool for gardeners The 2023 map is about 2.5 degrees warmer than the 2012 map, translating into about half of the country shifting to a ...