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2. When to Plant Dahlias for the Most Beautiful Blooms ... - AOL

   www.aol.com/plant-dahlias-most-beautiful-blooms...

   These easy-to-grow flowers are perennial in warmer climates and are considered hardy annuals in areas below USDA hardiness zone 8. Dahlias thrive in full sunlight and well-drained soil with an ...

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. 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.

5. 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. [20]

6. Driftless Area - Wikipedia

   en.wikipedia.org/wiki/Driftless_Area

   USDA plant hardiness zone regional map - North Central US. The climate is humid continental, displaying both the cool summer and warm summer subtypes as one travels from north to south. [24] The United States Department of Agriculture has the region falling mainly in zone 5a, with the northern fringe being 4b. A few patches in Wisconsin are 4a.

7. 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.