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  2. 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]

  3. University of Guelph Arboretum - Wikipedia

    en.wikipedia.org/wiki/University_of_Guelph_Arboretum

    The Third Edition of Canada's Plant Hardiness Zones based on 1981 to 2010 data, classifies Guelph as Zone 5b, based on seven variables relevant to plant growth. [5] Guelph lies in the corresponding Extreme Minimum Temperature Zone 5b (-26.1°C to -23°C). Both zones are based on the approach used by the United States Department of Agriculture. [5]

  4. Agriculture in Canada - Wikipedia

    en.wikipedia.org/wiki/Agriculture_in_Canada

    Horticulture crops, which includes nursery, flowers and fruits, became easier to grow with the development of plant hardiness zones. [22] ... Ontario, and British ...

  5. 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.

  6. Big News, Gardeners: The USDA Just Updated Their Plant ... - AOL

    www.aol.com/lifestyle/big-news-gardeners-usda...

    The USDA released a new hardiness zone map and half of the country has shifted. Read more here so you're ready to plant this spring. Gardeners, take note! The USDA released a new hardiness zone ...

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

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

    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 ...

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