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2. Hardiness zone - Wikipedia

   en.wikipedia.org/wiki/Hardiness_zone

   The zones are defined by steps of 5 degrees Celsius, from −15–−10 °C for zone 1 to 15–20 °C for zone 7. [36] They are numerically about 6 lower than the USDA system. For example, Australian zone 3 is roughly equivalent to USDA zone 9.

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

   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 ...

4. 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]

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. Hardiness (plants) - Wikipedia

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

   Hardiness of plants is defined by their native extent's geographic location: longitude, latitude and elevation. These attributes are often simplified to a hardiness zone. In temperate latitudes, the term most often describes resistance to cold, or "cold-hardiness", and is generally measured by the lowest temperature a plant can withstand.

7. Here's a Full Guide to the USDA Gardening Zones - AOL

   www.aol.com/lifestyle/heres-full-guide-usda...

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8. List of pollen sources - Wikipedia

   en.wikipedia.org/wiki/List_of_pollen_sources

   The plants listed below are plants that would grow in USDA Hardiness zone 5. A good predictor for when a plant will bloom and produce pollen is a calculation of the growing degree days. The color of pollen below indicates the color as it appears when the pollen arrives at the beehive.

9. Understanding Your Plant Hardiness Zone - AOL

   www.aol.com/news/understanding-plant-hardiness...

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