The U.S. Department of Agriculture's latest Plant Hardiness Zone Map shows Iowa is warming up, at least a little bit. Updated in November for the first time since 2012, the map, a standard guide ...

The USDA’s “Plant Hardiness Zone Map” shows Iowa’s average low temperature increased over the last 30 years. “Most of Iowa didn’t really change that much,” said Aaron Steil ...

The only Zone 6 in Iowa is a teeny spot, just south of Keokuk. (See the full map at planthardiness.ars.usda.gov) Annual or perennial? In most cases, labels accurately tell you if a plant is a ...

Plant lovers are very familiar with the USDA plant zone hardiness map ... Mark Widrlechner is an associate professor of horticulture at Iowa State University and he was instrumental in developing ...

Plant lovers are very familiar with the USDA plant zone hardiness map ... Mark Widrlechner is associate professor of horticulture at Iowa State University and he was instrumental in developing ...

but we’ll plant until we’re done,” Hunter says. Concerns About Drought The one concern is moisture. The latest U.S. Drought Monitor paints the picture in Iowa, showing nearly 80% of the ...