338×197× (44670 bytes) http://www.usna.usda.gov/Hardzone/ushzmap.html -- [[United States National Arboretum]], [[USDA]] English applies to jurisdiction: United...
C (climate factor) does not exceed 60 Source of Map: Natural Resources Conservation Service Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov...
