The U.S. Department of Agriculture unveiled its long-awaited update of its 1990 U.S. Plant Hardiness Zone Map Thursday at the National Arboretum in Washington. The map, which was revised to reflect ...

Gardeners and farmers across the U.S. look to plant hardiness zones for guidance on which plants to grow. The U.S. is divided into 13 plant hardiness zones based on the local coldest temperature of ...

If you're new to gardening you'll need to familiarize yourself with growing zones and what they mean. If you are a seasoned gardener, you still might be confused about zones. The U.S. Department of ...

Central Ohio gardeners aren’t growing pineapples yet, but a new federal map of planting zones confirms that Ohio is warming to new flora. Although Ohio has traditionally been split between Zones 5 and ...

WASHINGTON -- Global warming is hitting not just home, but garden. The color-coded map of planting zones often seen on the back of seed packets is being updated by the government, illustrating a ...