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

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    How many zones are in the USDA cold hardiness map? A shaded pathway at Yew Dell Botanical Gardens leads to the Castle Terrace, a stone castle that was hand-built in the 1950's. June 14, 2022

  3. Big News, Gardeners: The USDA Just Updated Their Plant ...

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    According to the new map released in November 2023, about half of the United States has shifted to a new hardiness zone. That's really big news if you consider 80 million Americans use this map to ...

  4. Hardiness zone - Wikipedia

    en.wikipedia.org/wiki/Hardiness_zone

    For practical purposes, Canada has adopted the American hardiness zone classification system. The 1990 version of the USDA Plant Hardiness Zone Map included Canada and Mexico, but they were removed with the 2012 update to focus on the United States and Puerto Rico. [8] The Canadian government publishes both Canadian and USDA-style zone maps. [37]

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

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    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.

  6. Hardiness (plants) - Wikipedia

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

    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.

  7. List of Northern American nectar sources for honey bees

    en.wikipedia.org/wiki/List_of_Northern_American...

    Hopkins' bioclimatic law states that in North America east of the Rockies, a 130-m (400-foot) increase in elevation, a 4° change in latitude North (444.48 km), or a 10° change in longitude East (two-thirds of a time zone) will cause a biological event to occur four days later in the spring or four days earlier in the fall. [1]

  8. The USDA Plant Hardiness Zone Map Just Changed for the ... - AOL

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

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  9. Climate of Columbus, Ohio - Wikipedia

    en.wikipedia.org/wiki/Climate_of_Columbus,_Ohio

    Columbus, Ohio has a humid continental (Köppen climate classification Dfa) climate, characterized by humid, hot summers and cold winters, with no dry season.The Dfa climate has average temperatures above 22 °C (72 °F) during the warmest months, with at least four months averaging above 10 °C (50 °F), and below 0 °C (32 °F) during the coldest.

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