Why Knowing Your Area's 'Hardiness Zone' Can Keep Your Plants Alive
by Stephen Johnson from Lifehacker on (#5YW1H)
Have you ever looked at the tag on a plant at your local garden center and been perplexed that it says something like Zones 5-9"? This number refers to the hardiness zones" defined by the U.S. Department of Agriculture that act as a guide to which plants will survive best in which regions of the country. While there...