New Plant Hardiness Zone Map (0)

1/25/12 •

The U.S. Department of Agriculture has released a new Plant Hardiness Zone Map (PHZM).  The map is the first updated in over twenty years and incorporates greater accuracy and detail since the last map from 1990.  The new map was developed by the USDA’s Agricultural Research Service (ARS) and Oregon State University’s (OSU) PRISM Climate Group and is available ... read more