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Today the most widely used system is the one first published in 1960 and developed for the United States Department of Agriculture (USDA) by Henry Skinner, the Director of the U.S. National Arboretum at that time. The original mapdivided North America into 10 zones, based on the average of...
The Plant Hardiness Zone Map can be used as a tool to determine which plants are most likely to thrive at a location. Plant Hardiness Zones Map KEY . While looking at the map ‘key’, you can see how the zone numbers are scaled to finer detail with the alpha subsets (e.g. 6a, ...
“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 minimum winter temperature, divided into 10-degree F zones.” As you can see on the key for ...
USDA Hardiness Zones: enter your zip code in the map here to find yours! Soil Testing: find your local cooperative agent for testing guidelines Here are my notes from the Fundamentals of Gardening Class that I reviewed: Key takeaways and definitions that I learned in my Fundamentals of Gardeni...