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  2. Here's How to Use the USDA's Plant Hardiness Zone Map - AOL

    www.aol.com/handy-map-tells-plants-thrive...

    For example, Seattle, Washington, and the city of Austin, Texas, are both in the USDA hardiness zone 9a because the map is a measure of the coldest temperature a plant can handle.

  3. Hardiness zone - Wikipedia

    en.wikipedia.org/wiki/Hardiness_zone

    The 1990 version of the USDA Plant Hardiness Zone Map included Canada and Mexico, ... 2023 USDA Plant Hardiness Zone Map (with ZIP code lookup, interactive)

  4. The USDA Plant Hardiness Zone Map Just Changed for the First ...

    www.aol.com/usda-plant-hardiness-zone-map...

    The USDA Plant Hardiness Zone Map Just Changed for the First Time in Over 10 Years. AnnMarie Mattila. March 17, 2024 at 9:00 AM ... You simply type in your zip code and it gives you zoomed in ...

  5. Is it getting warmer? What the USDA's new plant hardiness map ...

    www.aol.com/getting-warmer-usdas-plant-hardiness...

    You can check out your zone rating by going to planthardiness.ars.usda.gov/ and entering your zip code. What does the cold hardiness map measure? The polar vortex hit Louisville Wednesday, Jan. 30 ...

  6. Portal:Agriculture/Selected article/28 - Wikipedia

    en.wikipedia.org/wiki/Portal:Agriculture/...

    This was a period of warmer winters than the 1974–1986 period, especially in the eastern U.S.A. The 2003 map placed many areas approximately a half-zone higher (warmer) than the 1990 map had. Reviewers noted the map zones appeared to be closer to the original 1960 map in its overall zone delineations.

  7. Hardiness (plants) - Wikipedia

    en.wikipedia.org/wiki/Hardiness_(plants)

    Various hardiness ratings are published. In the United States (US), the most widely used is the U.S. Department of Agriculture (USDA) system of hardiness zones based on average minimum yearly temperatures. [4] This system was developed specifically for the extremely diverse range of conditions in the US, from baking desert to frozen tundra.

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