Tennessee is moving to a warmer climate:

NASHVILLE - A national arborist group has updated the U.S. Department of Agriculture's plant hardiness zone map, placing most of Tennessee in a warmer category because of recent climate patterns.

[..]

"Things are surviving further north than they did before," said Nashville plant enthusiast Mary Wilson. "The maps are good guidelines so you don't spend money on what absolutely won't work."

I guess it's nice that we will now be able to plant palm trees and whatnot, but what the article doesn't mention is how climate change affects the ecosystem:

After three decades of warming not seen in more than 1,000 years, spring arrives earlier around the world. As species shift their ranges toward the cooler poles or higher elevations, the season brings unexpected arrivals of migrating birds and mistimed hatchings of insects and flowerings of trees.

Some species on the move may flourish, but others may die. And the loss of just one kind of plant or animal, scientists say, can set off a cascade of biological events that can extinguish a whole ecosystem.

On the other hand, all this miserable, cold rain we've had for the past few days would have been a foot of snow thirty years ago. So there's that.