Usda Heat Zone Map
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.
Usda heat zone map. For more detail get a copy of the map from ahs. An ageratum may be 10 11 12 1. Click save full map button to download the map to your computer. The usda put together the map dividing the country into twelve cold hardiness zones based on the coldest recorded winter temperatures in a region.
The american horticultural society s heat zone map is similar to the usda s map for plant hardiness. Click open full map button to view the entire map in a new browswer window and have the option to print using your internet browser print function. Instead of being based on cold extremes the heat zone map is based on the number of heat days in a given area. Click preview map button to view the map.
Usda plant hardiness zone map. That indicates that tulips can thrive outdoors year round. If you live in zone 7 of both the usda map and the ahs plant heat zone map you will find a score for tulips of 3 8 on the usda map and 8 1 on the ahs plant heat zone map. This feature adjusts the transparency of the zone colors which allow the underlying attributes of the selected base map to be more or less visible.