What Growing Zone Is St. Ignace?

Our records indicate the United States Department of Agriculture has given St. Ignace a growing zone designation of 5b. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in St. Ignace's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used St. Ignace's weather data from 1991 - 2020 in their analysis.

Latest MI growing zone map

If you are looking for plants suitable for growing in the St. Ignace area, head on over to our page on plants that grow well in St. Ignace, MI.

Metal Arbor Trellis

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Stainless Steel Garden Tool Set

Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.

Large Greenhouse Kit

Spacious greenhouse for extending your growing season.

Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.

Deluxe Plastic Watering Can

High-capacity watering can with comfortable grip and precise spout.

Latest MI growing zone map

The growing zone is a measure of the lowest temperature that a plant can survive based on average lowest year temperatures, helping you to decide what plants would grow best in your particular climate. Since St. Ignace is in growing zone 5b this means that plants there can survive temperatures as low as -15 to -10 degrees Fahrenheit. Plants for St. Ignace's climate should be chosen with this in mind, or plants should be moved inside to keep their core temperature in the right range if necessary.

USDA growing zone map of the United States

Some zones may have been changed by the USDA as of 2023. To see if the St. Ignace area has been affected, refer to this map of half zone changes from the 2012 version of the USDA zones to the 2023 version.

map of usda hardiness zone changes from 2012 to 2023

Half zone changes from 2012 to 2023

The updated map shows that over half of the Southeast has warmed by about half a zone. For gardeners, that means you can now grow plants that tolerate a bit more heat and less frost than before. The tan areas reflect this shift. Meanwhile, the white areas had slight temperature changes, but not enough to move them into a new zone. In the Western U.S., a few spots shifted cooler. That’s not due to a colder climate, but because the new map uses a larger dataset, giving a more accurate picture of local conditions. It's important to keep track of these changes when planning your garden!

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Hardiness Zone FAQ

Have questions about hardiness zones and what they mean for your garden? Check out our FAQ below for quick answers to common questions about USDA hardiness zones and how they affect plant selection in St. Ignace, MI.

The USDA hardiness zone is 5b for St. Ignace. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.

St. Ignace's Growing Zone Details

USDA Growing Zone: 5b

Zip Codes: 49781

Longitude: -84.7258

Latitude: 45.8694

Lowest Avg Temperatures (F): -15 to -10

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Elevated planter for easy access and better drainage.

Shiitake Mushroom Kit

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Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.

Large Greenhouse Kit

Spacious greenhouse for extending your growing season.

Hoeing Ain't Easy Garden Sign

Fun and decorative garden sign to add personality to your space.

Map of the St. Ignace Area

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Small Greenhouse Kit

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Shiitake Mushroom Kit

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Plants For Other States

Looking for the best plants in a different area of the United States? Click on a button below to find plants that are ideal for that state's temperatures.

Large Greenhouse Kit

Spacious greenhouse for extending your growing season.

Stainless Steel Garden Tool Set

Complete garden tool set with heavy-duty stainless steel tools for all your gardening needs.

Hoeing Ain't Easy Garden Sign

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Elevated planter for easy access and better drainage.

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