Some of you might be familiar with USDA’s Plant Hardiness Zone Map.  It 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 zones.  Besides the static map, there is also an interactive GIS map.  You can also enter a zip code and find your hardiness zone.  Check it out!