The long-awaited revision of the U.S. Department of Agriculture 's zone hardiness map came out last week, and it confirms what a lot of us already knew: Winters are warmer.
Gardening Map Of Warming U.S. Has Plant Zones Moving North
Gardeners: Take heed. An updated plant map shows that the United States is getting warmer. That means spring planting may come earlier and some plants can tolerate new northern latitudes.
A new map will give garners in Montana a chance to turn over a new leaf for the first time in decades. Experts at Plant Land, a nursery in Kalispell, explained how the Department of Agriculture changed its map.