The map zones are based on the average lowest temperature of the year in each area. Much of northern and western Palm Beach County was previously in zone 9b, with average lowest temperatures of 25 ...

The map, available at planthardiness.ars.usda.gov, was previously updated in 2012, and the new, more detailed version is based on 30-year averages of the lowest annual winter temperatures from ...

May 23, 2016 / 6:23 PM CDT / CBS Minnesota ST. PAUL, Minn. (AP) — The U.S. Department of Agriculture says the recent frost has had little impact on Minnesota's corn crop.