Whenever you purchase a new perennial plant, shrub, or tree, you've probably noticed information about hardiness zones on the plant tag or description. But what does it mean? "Plant hardiness zones ...

Those mysterious numbers on plant tags hold the key to choosing the perfect plants for your region.

Image Credit: USDA-ARS and Oregon State University (OSU) - Public Domain/Wiki Commons. Have you ever wondered what the USDA Plant Hardiness Zone is? It’s mentioned in every gardening article or the ...

The United States Department of Agriculture (USDA) has released a new Plant Hardiness Zone Map (PHZM), the first update since 2012. The new map shows that most of the country, including New York State ...

Freezing weather may make it hard to believe, but many Chicago-area gardeners — and their plants — are now living in a slightly warmer world, according to a new version of the USDA’s plant hardiness ...

The USDA (U.S. Department of Agriculture) released an updated Plant Hardiness Zone Map in mid-November. This map is used to determine which plants will likely survive the winter in a particular ...

This past winter was one of the warmest and wettest on record. What do these weather extremes mean for the plants in your garden? The answer isn’t simple. One tool to help is the U.S. Department of ...

“I’m counseling to take this as a very slight warming, very little change,” said Chris Daly, founder of the PRISM Climate Group at Oregon State University, which produced the hardiness zone map along ...