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Find your plant hardiness zone based on the average annual extreme minimum winter temperature, displayed as 10-degree F zones and 5-degree F half zones. Use the interactive GIS-based map, enter your zip code, or download the map for your location.
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This page allows you to find and download state, regional,...
- How to Use the Maps
The Plant Hardiness Zone Map (PHZM) is based on the average...
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Nov 15, 2023 · The new map is based on 30-year averages of the lowest annual winter temperatures and is more accurate and detailed than the 2012 version. It is available online at https://planthardiness.ars.usda.gov/ and includes tips for growers and researchers.
The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is produced by the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) and is available on their website.
Find your plant hardiness zone by entering your ZIP code or clicking on the map. Explore the map features, download data, and create storymaps and webmaps.
- What Is Plant Hardiness?
- Using The Plant Hardiness Zone Map
- The 1990 USDA Hardiness Zone Map
- What Plants Can I Grow in My Zone
- Great For The East
- Zone Map Drawbacks
- Problems in The West
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Gardeners need a way to compare their garden climates with the climate wherea plant is known to grow well. That's why climate zone maps were created.Zone maps are tools that show where various permanent landscape plants canadapt. If you want a shrub, perennial, or tree to survive and grow yearafter year, the plant must tolerate year-round condition...
The latest version of the USDA Zone Map was jointly developed by USDA's Agricultural Research Service (ARS) and Oregon State University's (OSU) PRISM Climate Group, and released in December of 2023. To help develop the new map, USDA and OSU requested that horticultural and climatic experts review the zones in their geographic area, and trial versio...
This webpage was originally based on the 1990 USDA Hardiness Zone Map, which is one ofseveral maps developed to provide this critical climate information. The USDAmap is the one most gardeners in the eastern United States rely on, and the onethat most national garden magazines, catalogs, books, websites and nurseriescurrently use. This map divides ...
Surviving the winter is a primary cause of perennial plants, shrubs and trees not surviving the winter in your garden. Now that you've used this page to find your hardiness zone, when you are shopping for plants check the plant tag and there will almost always be a "Zone Range" listed. For example, if you are in zone 6, then plants that are "Zone 5...
The USDA map does a fine job of delineating the garden climates of theeastern half of North America. That area is comparatively flat, so mappingis mostly a matter of drawing lines approximately parallel to the Gulf Coastevery 120 miles or so as you move north. The lines tilt northeast as theyapproach the Eastern Seaboard. They also demarcate the sp...
But this map has shortcomings. In the eastern half of the country, the USDAmap doesn't account for the beneficial effect of a snow cover over perennialplants, the regularity or absence of freeze-thaw cycles, or soil drainageduring cold periods. And in the rest of the country (west of the 100thmeridian, which runs roughly through the middle of North...
Many factors beside winter lows, such as elevation and precipitation,determine western growing climates in the West. Weather comes in from thePacific Ocean and gradually becomes less marine (humid) and more continental(drier) as it moves over and around mountain range after mountain range.While cities in similar zones in the East can have similar c...
Learn how to use the USDA map to find your planting zone and choose plants that can survive your winter climate. Compare the 2023 and 1990 versions of the map and see the drawbacks of each.
The Plant Hardiness Zone Map (PHZM) 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). Each zone is divided into half zones designated as ‘a’ and ‘b’.
This page allows you to find and download state, regional, and national Plant Hardiness Zone Maps at various resolutions. Click on the map below to download state/territory maps or scroll down to find regional and national maps for download.
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