List Of USDA Zones
List of USDA Zones
Based on the 2012 USDA Hardiness Zone Map we put together a list of plant hardiness zones.
You can also look up for your USDA Zone by Zip Code:
Click Here to find your USDA Hardiness Zone.
☑️Alabama is in 7, 8 and 9 USDA plant hardiness zones. Alabama on average has approximately 185 days between the last and first frost
☑️California - Of 24 climate zones defined in the Sunset Western Garden Book and the 20 zones defined by the United States Department of Agriculture (USDA), California has 20 and 16, respectively. The USDA plant hardiness map divides North America into 11 hardiness zones. Zone 1 is the coldest; zone 11 is the warmest.
☑️Colorado - The USDA’s zones are based on the average low winter temperature for an area. In Colorado, zones range from the cold Zone 3a (-40 to -35 degrees F. ave. low winter temp) to warmest Zone 7a (0 to 5 degrees F. ave. low winter temp).
☑️Connecticut - Covering most of the state is Zone 6, split into colder 6a and warmer 6b with average temperature minimums from -10 to -5 degrees and -5 to 0 degrees, respectively. Connecticut's new zone, 7b with temperature minimums between 0 and 5 degrees, runs along the shoreline from New Haven westward to the New York state line.
☑️Delaware also spans two hardiness zones. Southern Delaware is considered to be in the northern end of zone 7, while northern Delaware is zone 6. The coastal area of Sussex is considered to be zone 7B.
☑️District of Columbia - USDA Zones 5b through 8a are represented in the District of Columbia
☑️Florida is divided into USDA zones 8–10, and the Florida Keys reside in zone 11. Miami falls under zone 10b where the minimum temperatures are between 30 and 40 degrees Fahrenheit
☑️Georgia was divided into three parts, placing us in Zone 7 (north Georgia) Zone 8 (middle Georgia) and Zone 9(south Georgia).
☑️Idaho is in USDA plant hardiness zones 3-7. Idaho on average has approximately 145 days between the last and first frost. Using the planting schedules below will help you get the most out of your garden.
☑️Illinois - Based on the USDA Hardiness Zone Map, the state of Illinois ranges from USDA Zone 5a to USDA Zone 7a.
☑️Indiana - Much of Northern Indiana is now in Zone 5b (-15 to -10 degrees F). The southern border of the state did not change. It remains is in Zone 6b (0 to -5 degrees F), but that area takes up a larger chunk of Southern Indiana. The map also adds two new zones — Zone 12 and Zone 13 — to include tropical regions.
☑️Iowa occupies parts of Zones 4 (northeast part of the state) through 7 (extreme southwest part of the state). The USDA Plant Hardiness Zone Map and AHS Plant Heat Zone Map are guides to help gardeners select plants suitable for their location.
☑️Kansas falls into hardiness zones 5 and 6. Zone 5 covers most of the northern half of the state while zone 6 makes up most of the south.
☑️Kentucky - Three USDA zones are found in the state of Kentucky: 6a, 6b, and 7a. The majority of the state is designated zone 6b, where temperatures can drop as low as -5 degrees Fahrenheit/-20.6 degrees Celsius in the winter.
☑️Louisiana includes just two zones, 8 and 9. The northern, central and some of the southern portions of the state are Zone 8, and coastal areas are Zone 9. The average minimum temperature in Zone 8 is 10 to 20 degrees and in Zone 9 is 20 to 30 degrees.
☑️Maine spans Plant Hardiness Zones 3-6. Each zone is based on the 30-year average of the single coldest temperature recorded each winter. Zone 3 is 10 degrees F colder than Zone 4, etc. In addition, each zone is split in half.
☑️The USDA Maryland plant map includes zones 5b, 6a, 6b, 7a, 7b, and 8a. The easiest way to find your general area is to click the map found at the end of this list.
☑️Zones in Massachusetts range from 5a in the Berkshire mountains to 7a on Cape Cod. Most of western Massachusetts is in zone 5b, while most areas in coastal eastern Mass are now designated as zone 6b, where the average annual extreme minimum winter temperature is between 0 and -5 degrees F.
☑️In Michigan, the hardiness zones range from 4a in the western Upper Peninsula and northern Lower Peninsula, to 6b in the southeast and along the Lake Michigan lakeshore. East Lansing, Michigan is in zone 5b (-10 to -15 F).
☑️Minnesota hardiness zones include 3a and 3b in the northerly regions, 4a in the middle of the state and 4b in the south. An extremely tiny pocket of warmer winter low temperatures exists in the most southerly location and is categorized as 5a.
☑️Mississippi enjoys a rather temperate climate and according to the Mississippi USDA planting map, the state includes zones 7a, 7b, 8a, 8b and 9a. Many plants, trees and shrubs thrive in these zones and gardeners tend enjoy a longer growing season.
☑️Missouri is divided into four planting zones: 5b in the north, 6a and 6b in the central regions and 7a towards the south. A small area in the southeast corner of the state enjoys the warmer growing zone of 7a.
☑️The vast majority of the state of Montana falls into Montana USDA growing zones 3a, 3b, 4a, 4b, 5a and 5b. There is a small section in the northwest region of the state that falls into a 6a-growing zone.
☑️Nebraska has four zones in the state as indicated on the 2012 USDA plant hardiness map. The Nebraska planting map includes 4a, 4b, 5a and 5b. The majority of the state experiences extreme winter low temperatures of -20 F. to -10 F.
☑️Nevada zones range from 4a through 10a. While the southerly sections of the state have a very mild winter with lows well above freezing, the mountainous regions can drop to a frigid -30 F.
☑️The New Hampshire USDA planting map divides this northerly state into six zones: 3b, 4a, 4b, 5a, 5b and 6a. To find your general area just click the map found at the end of this list.
☑️New Jersey is divided into four different planting zones, 6a, 6b, 7a and 7b. Click on the map to enlarge it to determine which zone you are in. USDA revised the old plant hardiness map to reflect changes in average winter low temperatures over the last thirty years.
☑️Based on the 2012 USDA Hardiness Zone Map, this interactive version covers the state of New Mexico which ranges from USDA Zone 4b to USDA Zone 9b.
☑️New York - Based on the 2012 USDA Hardiness Zone Map, this interactive version covers the state of New York which ranges from USDA Zone 3b to USDA Zone 7b.
☑️North Carolina USDA Plant Hardiness Zones. North Carolina is comprised of five hardiness zones: 6a, 6b, 7a, 7b, and 8a. The areas that experience the lowest temperatures (zones 6a and 6b) are located in the western part of the state, as it features a significantly higher elevation than the coastline.
☑️North Dakota is divided into two major zones and four subzones, according to the new 2012 North Dakota planting map. A chilly 3a and 3b are in the northern part of the state while the remainder of the state falls in a 4a and 4b.
☑️The three USDA zones found in Ohio are 5b, 6a, and 6b. The majority of the state falls under zone 6a, with low temperatures bottoming out between minus 5 and minus 10 degrees Fahrenheit.
☑️The Oklahoma planting map is divided into zones according to 10-degree increments. Oklahoma includes zones 6a, 6b, 7a, 7b and a small pocket of 8a in the southeastern part of the state.
☑️Oregon zones are expansive and include zones 4b through 9b.
☑️Pennsylvania zones include 5a, 5b, 6a, 6b, 7a and a very small section of 7b. If you have a difficult time finding your location on the above map, you can visit the USDA site where you can input your zip code to find out exactly which zone you are in.
☑️Based on the 2012 USDA Hardiness Zone Map, this interactive version covers the state of Rhode Island which ranges from USDA Zone 6a to USDA Zone 7a.
☑️Based on the 2012 USDA Hardiness Zone Map, this interactive version covers the state of South Carolina which ranges from USDA Zone 7a to USDA Zone 8b
☑️The USDA collected data over thirty years for their new plant hardiness map that was released in 2012. South Dakota zones include the chilly regions of 3b, 4a, 4b and a couple small sections of 5a.
☑️The state of Tennessee ranges from USDA Zone 5a to USDA Zone 8a. Zones in the state include 5a, 5b, 6a, 6b, 7a, 7b and 8a. When shopping for plants, it is useful to know your zone information. Plants that are suitable for your zone will be able to survive winter extreme temperatures as defined by the USDA plant hardiness zone map.
☑️Based on the 2012 USDA Hardiness Zone Map, this interactive version covers the state of Texas which ranges from USDA Zone 6b to USDA Zone 10a.
☑️In Utah, the hardiness zone varies between 4 and 6, depending on where you live. Most gardens in Salt Lake City are in zone 5 with a minimum temperature ranging from –10 to –20 degrees Fahrenheit.
☑️Based on the 2012 USDA Hardiness Zone Map, this interactive version covers the state of Vermont which ranges from USDA Zone 3b to USDA Zone 5b. Vermont zones include a small pocket of 3b with the central section of the state being zone 4a and the southern section 4b. There are a few pockets of 5a in the very southerly parts of the state.
☑️Virginia USDA plant hardiness zones range from 5a in the western mountains to 8a on the eastern shore.
☑️Based on the 2012 USDA Hardiness Zone Map, this interactive version covers the state of Washington which ranges from USDA Zone 4a to USDA Zone 9a.
☑️West Virginia zones include 5a at the highest elevation in the east to 7a in the south. The majority of the state falls in zones 6a and 6b with extreme average winter low temperatures down to -10 degrees F.
☑️Wisconsin has three cold hardiness zones – Zone 3 (Northwestern WI), Zone 4 (North, Central, Western WI) and Zone 5 (Southern and eastern WI up past Green Bay and Apostle Islands).
☑️Wyoming is in USDA plant hardiness zones 3-6. Wyoming on average has approximately 115 days between the last and first frost.
USDA Zones By Location:
