Illinois planting zones fall between 5a and 7a, with the northern part of the state being at the lower end of the range.

Table of Contents

What climate zone number is Illinois?

Based on the 1990 USDA Hardiness Zone Map, this interactive version covers the state of Illinois which ranges from USDA Zone 4b to USDA Zone 6b.

What planting zone is Chicago Il?

Chicago falls into zone 5, with a low average temperature of -20°F to -10°F. More often than not, you will find a label on plants indicating that the plant is “hardy up to zone x.” Additionally, websites often categorize plants by zone.

How do I figure out my growing zone?

The best way to determine your hardiness zone is to use the USDA Hardiness Zone Map. The online version has a feature where you can search hardiness zone maps by zip code or state. Seed packet maps are often based off of this information as well.

What growing zone is Northern Illinois?

This is called a Plant Hardiness Zone. Southern Illinois is in Zones 6a-7a. Central Illinois is in Zones 5a-6a. Northern Illinois is in Zones 5a-5b.

👉 For more insights, check out this resource.

Where is zone 8 in the US?

USDA Zone 8 covers most of the Pacific Northwest and a great swath of the American South, including Texas and Florida.

What are the zones in Chicago?

Zone 1 is the area within the city limits of Chicago between North Avenue and 95th Street. Zone 2 is the area within the city limits of Chicago north of North Avenue. Zone 3 is Cook County and the area including the City of Chicago south of 95th street.

👉 Discover more in this in-depth guide.

What is Hardiness Zone 10?

Zone 10: 30 to 40°F Zone 10 sees some of the hottest temperatures in the U.S., prevalent in tropical places such as Southern California and Southern Florida. Plants in this zone can handle temperatures as low as 30 to 40°F. Common Plants: Bougainvillea (Bougainvillea spectabilis)

Where is zone 6 in the United States?

It stretches south and west through Ohio, Kentucky, Kansas, and even parts of New Mexico and Arizona before turning northwest up through Utah and Nevada, ending in Washington state. If you live in zone 6, you may be scoffing at the idea of lows like this because you’re used to warmer or colder temperatures.

What planting zone is Naperville IL?

Naperville, Illinois is located in USDA Hardiness Zone 5.

Article first time published on

When can I plant in Zone 5b?

USDA zone 5 is divided into zone 5a and zone 5b and each will vary somewhat regarding planting dates (often by a couple of weeks). Generally, planting is dictated by the first frost free date and the last frost free date, which in the case of USDA zone 5, is May 30 and October 1, respectively.

What zone is Peoria Illinois?

Peoria, Illinois is located in USDA Hardiness Zone 5. Planting vegetable seeds or transplants at the correct time is important for getting the most out of your garden. Knowing your first and last frost dates will help you start your vegetable seeds at the right time. Illinois’ USDA Hardiness Zones are zones 5, 6 and 7.

What planting zone is Bloomington?

Bloomington, Illinois is in USDA Hardiness Zones 5b.

What is hardiness zone 5a?

Zone 5: The minimum average range of temperatures is -10° to -20°F. Zone 5a: This subzone has a minimum average temperature of -15° to -20° F. Zone 5b: This subzone has a minimum average temperature of -10° to -15°F.

When can you start planting in Chicago?

CropBased on Frost Dates Based on Moon DatesStart Seeds IndoorsPlant Seedlings or TransplantsBell PeppersFeb 6-20 Feb 6-16Apr 25-May 9 Apr 30-May 9BroccoliFeb 20-Mar 6 Mar 2- 6Mar 21-Apr 11 Apr 1-11CabbageFeb 20-Mar 6 Mar 2- 6Mar 21-Apr 4 Apr 1- 4

What zone is the Southside of Chicago?

Chicago, Illinois is in USDA Hardiness Zones 5b and 6a.

How many zones are in Chicago?

There are 135 Opportunity Zones in Chicago and 46 Opportunity Zones in suburban Cook County.

What zone is downtown Chicago?

Chicago Police Zone 4 – Districts 1 and 18 Zone 4 is the downtown Chicago and Mag Mile scanner feed.

What is the difference between zone 8a and 8b?

Zone 8b means that the average minimum winter temperature is 15 to 20 °F. Zone 8a has an average minimum winter temperature of 10-15 °F. When you purchase a plant that is described as “hardy to zone 8”, it means that the plant can withstand a range of minimum temperatures (zone 8a and 8b) from 10 °F to 20 °F .

Where is zone 9 in the United States?

Zones 9 to 11 in the United States encompass such areas as Texas, California, Louisiana, Florida, and other southern areas of the states. Their characteristics regarding water vary, however, which is also a consideration when choosing plants.

What plant zone is 9?

Zone 9: The minimum average temperature range is 20°F to 30°F. Zone 9a: The minimum average temperature range is 20°F to 25° F. Zone 9b: The minimum average temperature range is 25°F to 30°F.

What is a zone 8?

US States in Hardiness Zone 8 In North America, Zone 8 is one of the warmest zones, containing much of the southern quarter of the United States, including much of North Carolina, South Carolina, Georgia, Alabama, Mississippi, Florida, Louisiana, Arkansas, Texas, Arizona, California, and coastal Oregon and Washington.

What plant zone is Ohio?

Most of Ohio falls in zone 6; the majority of Northeast Ohio is in Zone 6a. (This means the coldest the area gets is between -5 and -10 degrees Fahrenheit.)

What does Zone 11 mean?

Climate Zone 11 is the northern California valley, south of the mountainous Shasta Region, east of the Coastal Range, and west of the Sierra Cascades. Seasons are sharply defined. Summer daytime temperatures are high, sunshine is almost constant, and the air dry.

Can I grow a zone 9 plant in Zone 10?

If a plant is hardy in zones 5-9 and you plant it in zone 10, the most likely impacts are a lack of vigor, a lack of flowers and if the plant usually sets fruit, it is unlikely to set fruit. In other words, plants grown climates that are too warm tend not to thrive and waste away over time.

What grows best in zone 6b?

ZonesShipping DatesLast Order Date11/22/2021

What planting zone is St Louis MO?

Most of Missouri is in the central zone, or zone 6 on the map. This includes St. Louis, Kansas City, Columbia and Springfield, along with most of Kansas and the southern half of Illinois.

What grows well in Zone 5b?

What does hardiness zone 6a mean?

Zone 6a is a little colder with an average winter temperature of -10 to -5 fahrenheit. Zone 6b is a little warmer with an average winter temperature of -5 to 0 fahrenheit. All plants and seed packets have the zones that the plant grows best with. This is basically the coldest area that plant is likely to survive in.

When can I plant lettuce in Zone 5?

Last week in February or first week in March: – Start seeds of lettuce indoors. Exact date will vary depending on the weather. – When weather permits, empty both compost bins and place about a 1 to 2 inch layer of compost over all garden beds.

What can I plant in Zone 5b in July?

Seeds can continue to be sown throughout July for late crops of beets, bush beans, carrots, chard, Chinese cabbage, cucumbers, summer squash, and corn. Cover with pre-moistened potting soil mix which will not be so likely to crust and crack.