Ideas & Inspiration

Find Your USDA Plant Hardiness Zone

Know Your Hardiness Zone
Crocus emerging from the snow

When you know your hardiness zone, you get more out of your gardening dollars. Learn what plants and shrubs are perennial in your zone. These will come up every year and, unlike annuals, will not need to be replaced. Learn more about the differences between annuals and perennials.

Look for a plant’s hardiness zone on plant tags and online. Because the zone number increases the further south you go, choose plants that are your zone and lower. For example, if you live in zone 6, choose plants that are winter hardy to zones 6, 5, 4, 3 and 2. (Keep in mind that plants that can handle zone 2 winter cold may not tolerate the heat of a zone 6 summer.) Plants that fall in your range will thrive in your landscape.

How to Determine Your Hardiness Zone
A map of USDA Plant Hardiness Zones.

Look for your area of the country and follow the color-coded dots on the bottom of the map to determine your zone. When shopping for plants, look for hardiness zone information on plant tags and online. 

Even within zones, not all gardens will be the same. With microclimates and variations in weather, you may have years when tender plants will survive winter cold, or an instance when unexpected severe cold snap takes out hardy plants. Pay attention to areas in your garden that may provide protection for tender plants through winter, or a break from summer heat for winter-hardy plants that may struggle in summer.

When you know your USDA hardiness zone, you can plan for success in your garden. Learn how to use the USDA hardiness zone map to help select plants that will thrive in your area’s climate. 

Another valuable piece of gardening information is your area’s average date of last frost in spring and average date of first frost in fall. This will help you plan spring and fall vegetable gardens. Find out your region's average date of last frost in spring and first frost in fall in this frost date calendar.