Plant Hardiness Zone Map (2012)
The US National Arboretum (USDA) plant hardiness zone map. This is the new Internet version (January 2012) of the map that allows users to view individual states and also enter a zipcode to find your zone.
Organization
http://www.ars.usda.gov/main/main.htm
http://www.ars.usda.gov/main/main.htm
Plant Hardiness Zone Map (2012)
Sub-Topics
Species Selection, Biology (tree)
Species Selection, Biology (tree)
State(s)/Region(s)
National
National
