Almost every gardening book starts by looking at what plant hardiness zone you are in. This is important because it determines what plants will die in winter. That’s right – the hardiness zone is all about how cold tolerant a plant is and at what temperature its cell structure breaks down.
The USDA publishes a map that divides the US down into 13 zones, each separated by 10°F. In more detailed maps, those zones are split into sub-zones separated by 5°F. The map was last updated in 2012 and there are websites where you plug in your zip code and your zone will appear.Read more “Garden Zones”