What Growing Zone Is Waterloo?

Our records indicate the United States Department of Agriculture has given Waterloo 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 Waterloo's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Waterloo's weather data from 1991 - 2020 in their analysis.

Latest WI growing zone map

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

Seed Starting Trays

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Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.

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Easy-to-assemble raised garden bed for better soil control and drainage.

Shiitake Mushroom Kit

Grow your own delicious shiitake mushrooms at home.

Steel Hori Hori Weeding Knife

Versatile Japanese-style gardening knife for weeding and planting.

Latest WI 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 Waterloo is in growing zone 5b this means that plants there can survive temperatures as low as -15 to -10 degrees Fahrenheit. Plants for Waterloo'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 Waterloo 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 Waterloo, WI.

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

Waterloo's Growing Zone Details

USDA Growing Zone: 5b

Zip Codes: 53594

Longitude: -88.9899

Latitude: 43.1835

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

Wooden Chicken Coop

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Cluck Around Sign

Whimsical sign for your chicken coop area.

Metal Seed Storage Box

Organized storage solution for your seed collection.

Raised Garden Planter

Elevated planter for easy access and better drainage.

Shiitake Mushroom Kit

Grow your own delicious shiitake mushrooms at home.

Map of the Waterloo Area

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Brass Watering Can

Elegant brass watering can with classic design and durability.

Self Watering Plant Pots

Innovative pots that maintain optimal moisture levels.

Fiskars Garden Harvest Basket

Sturdy basket for collecting and carrying your garden harvest.

Seed Starting Trays

Perfect for starting seeds indoors before transplanting to your garden.

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.

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.

Seed Starting Trays

Perfect for starting seeds indoors before transplanting to your garden.

Raised Garden Bed Kit

Easy-to-assemble raised garden bed for better soil control and drainage.

Steel Hori Hori Weeding Knife

Versatile Japanese-style gardening knife for weeding and planting.

Worm Composting Kit

Complete kit for starting your own worm composting system.

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