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With spring on the horizon, many gardeners are preparing for prolonged, hearty growing seasons in their region. The United States has a diverse ecological footprint, so growing seasons differ slightly ...
"The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is based on the average annual ...
USDA plant hardiness zones categorize areas based on their average minimum winter temperatures.
Perhaps unfamiliar to those who are not farmers or household gardening aficionados, the USDA's growing zone map is well known to those who are.
The Plant Hardiness Zone Map is based on the average annual extreme minimum winter temperature, displayed as 10-degree F zones ranging from zone 1 (coldest) to zone 13 (warmest), the USDA notes.
Approximately 80 million American gardeners and growers represent the most frequent users of the USDA Plant Hardiness Zone Map, the USDA explained on its website.