Wisconsin Planting Zones – Growing Zones Guide

What Planting Zone Is Wisconsin In?

On the 2023 USDA Plant Hardiness Zone Map, Wisconsin runs from approximately zone 3b to zone 6a, based on 30-year averages of the coldest winter temperatures (1991–2020). The coldest zones appear in the far north and interior Northwoods, while the mildest zones trace the Lake Michigan shoreline in the southeast, Door County, and some southern river valleys. Most home gardens fall between zones 4a and 5b, with scattered 3b pockets in the far north and 6a pockets near Milwaukee and other urban heat islands.

• Milwaukee, Racine, Kenosha & Southeast Shore: Much of this corridor is zones 5b–6a, warmed by Lake Michigan and dense development.
• Madison, Janesville, Beloit & Southern Tier: South-central Wisconsin is mainly zones 5a–5b. The state’s only zone 6a areas are a narrow Lake Michigan shoreline strip from Racine to Sheboygan and Washington Island off Door County..
• Central Wisconsin & Wisconsin River Valley: Wisconsin Dells, Portage, Stevens Point, and Wisconsin Rapids sit mostly in zones 4b–5a, with cold winters and reliable, moderate-length growing seasons.
• Western Wisconsin & Driftless Region: La Crosse, Eau Claire, and Prairie du Chien fall in zones 4b–5a, with sheltered coulees and river valleys often a half-zone warmer than open uplands.
• Northwoods & Lake Superior Shore: Wausau, Rhinelander, Hayward, Ashland, and Superior span zones 3b–4b, with long, cold winters, late spring frosts, and short but productive summers.
• Door County Peninsula: The moderating influence of Green Bay and Lake Michigan creates pockets of zones 5a–6a well suited to cherries, grapes, and specialty crops.

^*Zones summarized from the 2023 USDA hardiness map and Wisconsin climate analyses using 1991–2020 climate data.

USDA Hardiness Zone Maps for Wisconsin

The updated 2023 USDA Plant Hardiness Zone Map uses modern 30-year climate normals (1991–2020) and improved terrain data, refining zone boundaries around Wisconsin’s lakeshores, river valleys, forested uplands, and urban regions. Lake Michigan and Lake Superior especially shape winter lows: moderating some shorelines while allowing bitter cold just a short distance inland. Compared with the older 2012 map, the 2023 map shows many Wisconsin locations warming by roughly a half-zone, especially in the south and along major water bodies.

Imagine a Wisconsin planting zone map here with colder purples and blues in the far north and interior Northwoods, and warmer greens and yellows along Lake Michigan, Door County, the southern tier, and parts of the Mississippi River Valley.

Use the map alongside your ZIP code to pinpoint your Wisconsin garden zone. Look up your Wisconsin planting zone by ZIP code using the USDA tool, then return here or visit our Plant Finder for plants suited to your exact zone, soil, and exposure.

^*According to the USDA and regional climate data groups using 1991–2020 climate normals.

Wisconsin Growing Zones by Region

Wisconsin’s climate is shaped by latitude, the Great Lakes, the Mississippi River, lake-effect snow, and complex terrain in the Driftless Area and Northwoods. The Great Lakes and big rivers moderate winters, delay spring warmth, and enhance snowfall, while inland uplands experience more extreme cold and frost variability. Gardens only miles apart – or simply lakefront vs. inland – may differ by a half-zone or more.

Milwaukee, Racine, Kenosha & Southeast Shore (Approx. Zones 5b–6a)

This region includes Milwaukee, Racine, Kenosha, Waukesha, and nearby communities hugging Lake Michigan.

• Relatively mild winters for Wisconsin; warm, humid summers.
• Excellent for long-season vegetables, roses, ornamental shrubs, and many tender perennials treated as perennials rather than annuals.
• Heavy, urban or lake-plain soils benefit from organic matter, raised beds, and mulch to improve drainage.

Madison, Janesville & Southern Tier (Approx. Zones 5a–5b, Local 6a)

This region includes Madison, Sun Prairie, Janesville, Beloit, and surrounding rural communities.

• Cold, snowy winters and warm, humid summers with good growing-season length.
• Ideal for vegetables, small grains, orchards, prairie plantings, and shade-loving ornamentals under mature trees.
• Clay or compacted glacial soils benefit from raised beds, compost, and thick organic mulch.

Central Wisconsin & Wisconsin River Valley (Approx. Zones 4b–5a)

This region includes Wisconsin Dells, Portage, Stevens Point, Wisconsin Rapids, and nearby communities.

• Cold winters and warm summers with moderately long seasons.
• Well suited to vegetables, small grains, hardy fruit trees, and woodland-edge ornamental plantings.
• Mixed sand, loam, and clay soils benefit from organic matter to improve moisture retention or drainage as needed.

Western Wisconsin & Driftless Region (Approx. Zones 4b–5a, Local 5b)

Includes La Crosse, Eau Claire, Prairie du Chien, and the coulee country along the Mississippi and its tributaries.

• Cold, snowy winters with warm, often humid summers and frequent microclimates in valleys and bluffs.
• Great for hardy fruit trees, cool- and warm-season vegetables, berries, and native prairie flowers.
• South-facing slopes warm early; low-lying valleys can trap cold air and late frosts.

Northwoods & Lake Superior (Approx. Zones 3b–4b)

Rhinelander, Hayward, Ashland, Superior, and much of far northern Wisconsin.

• Long, cold winters and short, cool summers; inland frost pockets can be very cold.
• Vegetable gardens rely on raised beds, tunnels, black plastic, and early-maturing varieties.
• Lake Superior shorelines behave slightly warmer than interior forests; open uplands are windy and exposed.

Best Plants for Wisconsin Planting Zones

Once you know your Wisconsin planting zone – whether you garden in a warm Milwaukee suburb, a Madison backyard, a central sand plain, a Driftless coulee, or a short-season Northwoods site – you can choose plants that thrive with your climate. Focus on cold-hardy perennials, heat- and humidity-tolerant annuals, and varieties adapted to Upper Midwest weather swings.

Vegetables for Wisconsin Growing Zones

• Cool-season crops (spring & fall statewide; much of the season in north): lettuce, spinach, arugula, kale, collards, peas, broccoli, cabbage, carrots, beets, turnips, radishes.
• Warm-season crops (after last frost): tomatoes, peppers, summer squash, pumpkins, cucumbers, snap beans, sweet corn, and melons in the warmest zones and protected sites.
• Short-season & northern gardens (3b–4b): fast-maturing peas, leafy lettuces, baby carrots, radishes, cold-tolerant kale and other brassicas, plus compact determinate tomatoes grown under row covers or low tunnels.

Fruits & Trees for Wisconsin Hardiness Zones

• Zones 5–6 (southern & lakeshore): hardy apples, pears, tart and select sweet cherries, peaches, plums, hardy grapes, and hazelnuts.
• Door County & mild lakeshore pockets (warmer 5b–6a): extended-season plantings of tree fruits, wine grapes, and other specialty fruits that benefit from moderated winter lows.
• Zones 3–4 (Northwoods & interior): cold-hardy apples, tart cherries, hardy plums, serviceberries, and elderberries perform well when blossoms are protected from hard late freezes.
• Small fruits (zones 3–6): strawberries, raspberries, blackberries, blueberries, and currants thrive with acidic, organic-rich soils and consistent moisture.

Flowers & Ornamentals for Wisconsin Garden Zones

• Sun lovers: salvias, yarrow, coneflowers, black-eyed Susan, blanket flower, and hardy daisies for bright, pollinator-friendly beds.
• Reliable perennials: lavender (in well-drained sites), catmint, ornamental grasses, penstemons, hardy geraniums, and hellebores handle freeze–thaw cycles and summer heat.
• Structural plants: shade trees, conifers, evergreen shrubs, and cold-hardy sedums and select succulents where drainage is excellent provide year-round framework and texture.

Native Plants for Wisconsin Landscapes

Wisconsin native plants are adapted to local soils, cold winters, and humid summers. They support pollinators, birds, and beneficial insects while offering durable, low-maintenance beauty.

• Native wildflowers: purple coneflower, black-eyed Susan, wild bergamot, milkweeds, asters, lupines, and columbine.
• Native grasses: little bluestem, switchgrass, and prairie dropseed for meadows, slopes, and low-mow plantings.
• Native shrubs & trees: serviceberry, chokecherry, hazelnut, red osier dogwood, oak, maple, white pine, and spruce species suited to your site.
• Wet areas: blue flag iris, joe-pye weed, swamp milkweed, and native sedges for rain gardens, ditches, and lakefront plantings.

Interactive Wisconsin Planting Calendar (General Guide)

Tap a month to see what to plant in Wisconsin by zone. Adjust for your frost dates, elevation, and whether you garden near a Great Lake, in the Driftless, or in the far north.

Wisconsin Gardening Tips by Zone

Wisconsin gardeners face winter cold, summer humidity, lake-effect weather, varied soils, and shifting frost patterns. These tips help you succeed from zones 3b to 6a:

• Know your microclimate. Lakefront and river-valley gardens run warmer; inland low spots and open fields freeze early.
• Time planting carefully. Southern Wisconsin enjoys roughly May–October seasons; Northwoods and Lake Superior windows are much shorter.
• Improve your soil. Heavy clays, sands, and compacted urban soils all benefit from compost, mulch, and raised beds.
• Water wisely. Rainfall varies by year; most vegetable beds need supplemental irrigation June–August.
• Watch humidity-related diseases. Use spacing, mulch, crop rotation, and resistant varieties to reduce blight and mildew.
• Use season extension. Row covers, low tunnels, and cold frames help everywhere, especially in zones 3–4.
• Choose short-season varieties. Essential for tomatoes, melons, and corn in northern and interior zones.
• Plan for wildlife. Deer, rabbits, and Japanese beetles are common; consider fencing and plant choices.
• Lean on natives and prairie plants. They handle Wisconsin’s weather extremes and attract pollinators.