What is the 'USDA Hardiness Zone Map'?

What is the 'USDA Hardiness Zone Map'?

Tracy DiSabato-Aust (Garden Designer and Author) gives expert video advice on: What is the 'USDA Hardiness Zone Map'?; What is the 'AHS Plant Heat Zone Map'?; What is the 'Sunset zone map'? and more...

What we are usually looking at with zones are the USDA Hardiness Zones. Those are broken down throughout the United States and Southern Canada. We look at the average minimum temperature, which is usually broken down in 10 degree increments.