Juneau County, in Wisconsin, sits in USDA hardiness zone 4b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Crops well matched to these conditions include cabbage, cranberry, turkish rocket, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Juneau County lies within the Central Sands (Central Wisconsin) — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Juneau County holds more than one microclimate.
Soils and elevations shift across Juneau County, so your frost dates and drainage aren't the county average. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Juneau County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Juneau County — the short answer
Juneau County, Wisconsin: USDA zone 4b, about 167 days between hard freezes, across 491K acres.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 27
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Oct 11
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~167
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 491K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 4b is Juneau County's average, not your lot's — a low corner or a tree line moves it. Against Juneau County's 167-day season, see what your own ground reads.
Heat in Juneau County
Across a year, Juneau County accumulates about 2,267 growing degree days above 50°F, about 117 more than the middle Wisconsin county — ahead of 47 of Wisconsin’s 72 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Juneau County
Across Juneau County, the ground is predominantly Entisols, where Ponycreek, Norden, and Tint are the most extensive named soil series. The soil is generally somewhat poorly drained with a sand surface. Topsoil pH runs about 4.5–6.2, strongly acidic. Rainfall drains through hydrologic group A/D soils.
Soil order
Entisols
Drainage
Somewhat poorly drained
Prime farmland
5%
Hydric soils
31%
Soil still varies lot by lot — soil types explained.
How the ground varies across Juneau County
The USDA soil survey maps 29% of Juneau County as somewhat poorly drained — but another 66% drains differently: 21% well drained, 14% moderately well drained.
Ponycreek is the most extensive named soil at 11% of mapped acres, then Norden (8%) and Tint (6%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Juneau County
Each reading below is measured for Juneau County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Juneau County are somewhat poorly drained, in hydrologic group A/D — ground that sheds water slowly.
Beds can stay saturated for days after heavy rain, and the roots of most vegetables, berries, and fruit trees suffocate or rot in soil that never drains.
Raised beds or mounded rows lift roots above the wet zone; choose water-tolerant crops for the lowest spots.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Juneau County runs about pH 4.5–6.2, on the acidic side.
Blueberries, potatoes, and rhododendrons thrive in it, but most vegetables start locking out nutrients below about pH 6.0 and grow pale and stunted no matter how much you feed them.
A measured lime application raises pH for the crops that need it — but test first, because the right rate depends on your own soil, not the county average.
USDA NRCS SSURGO
Season length
MeasuredJuneau County runs about 167 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredJuneau County sits in USDA hardiness zone 4b.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Juneau County is in
Juneau County spans 2 EPA Level III ecoregions — North Central Hardwood Forests (73%) and Driftless Area (27%). Which one your land falls in changes what grows wild there and how the ground behaves, and a county-wide answer cannot tell you which.
What Grows in Juneau County
We scored all 1,086 plants against Juneau County's own USDA zone 4b and its own 167-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's Wisconsin profile.
Is it too late to plant in Juneau County?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 30; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 27 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 11 — long-season crops need about 90 days of runway, quick greens only 30. As the window narrows, the plantings just get faster — fall brassicas, then greens, then garlic to finish.
Documented around Juneau County
- Japanese beetle5 documented records
- monarch butterfly59 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Juneau County
USGS estimates 71,167 lb of Glyphosate on Juneau County farmland in 2019, its largest by weight, ahead of Metolachlor & Metolachlor-s (34,358 lb) and Metolachlor-s (17,657 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Juneau County — and how to grow with it.
We checked the federal record across Juneau County — 379 documented sites across 7 of the 9 source types we track.
The most significant on record: 3 Superfund sites (none NPL-listed). Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
There's a meaningful federal record across Juneau County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Juneau County
Closest first, across Juneau County. Listing isn't leaking, and distance isn't exposure.
- VOLK FIELD BLDG #2000Underground Storage Tanks · 0.6 mi
- WISCONSIN CENTRAL LTDUnderground Storage Tanks · 1.2 mi
- ROBERT J SOLINSKIUnderground Storage Tanks · 1.9 mi
- BOZ BROTHERS TRAVEL PLAZABrownfields · 2.5 mi
- Hardwood Range - Bldg #2014Underground Storage Tanks · 2.9 mi
- GERMANTOWN JUNCTION STOREUnderground Storage Tanks · 3.1 mi
- Cedar Springs Enterprises LLCUnderground Storage Tanks · 3.2 mi
- New Lisbon Travel StopUnderground Storage Tanks · 3.6 mi
- Street Magic Enterprise LLCUnderground Storage Tanks · 3.6 mi
- JU-16/03E/09-0064Nitrate · 3.7 mi
- S&S PETROLEUM #218Underground Storage Tanks · 3.7 mi
- New Lisbon Correctional InstitutionUnderground Storage Tanks · 3.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Juneau County's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Juneau County.
Total Sites
379
across Juneau County
Risk Level
Elevated
Highest-severity
3 Superfund sites (none NPL-listed)
Sources Checked
across Juneau County
Severity Distribution
across Juneau County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Juneau County, Underground Storage Tanks runs higher than the national average — 258 sites across Juneau County. That's not a problem with your land — it's information about it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Juneau County
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Juneau County average
Your land is one point inside Juneau County
Everything above resolves to Juneau County as a whole — one PHZM band and one county frost record, read across 491K acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at county scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better county average.
Your Lot vs the Juneau County Average
Juneau County Average
- ●USDA Zones 4b, averaged across Juneau County
- ●One soil character for all of Juneau County
- ●Frost dates read at Juneau County's scale: Apr 27 to Oct 11
YOUR Parcel
- ✓Your exact zone, not Juneau County's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Juneau County
Pull a site-specific report for your exact address in Juneau County, Wisconsin — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Juneau County averages can't show:
We read public map data around Juneau County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Juneau County average
How we know this about Juneau County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Juneau County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Juneau County
When does frost risk typically end in Juneau County?
The last hard freeze (28°F) in Juneau County typically lands around Apr 27, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about May 18.
How long is the growing season in Juneau County?
Measured between 28°F hard freezes, Juneau County sees about 167 frost-free days — roughly Apr 27 through Oct 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 18 to Sep 27, about 132 days.
Is the soil safe to grow vegetables in Juneau County?
The federal record around Juneau County is a meaningful one — 379 documented sites, mostly Underground Storage Tanks entries (258), the nearest Underground Storage Tanks record about 0.6 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
Everything above is measured at Juneau County's scale — its 4b band and its 167-day season. Your yard writes its own version of Juneau County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads Wisconsin's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Juneau County’s own scale
9 of the readings below were taken at Juneau County's own scale — its own ~167-day span between 28°F freezes, the 3 most extensive soil series mapped here and 379 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Juneau County's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Juneau County's own 28°F hard-freeze dates and its ~167-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Juneau CountyUSDA NRCS SSURGO
- 379 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 0.6 miles outFederal environmental registers
- Juneau County's boundary and the 490,931 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~167-day seasonGrowable Ground crop-matching engine
- The 2 ecoregions Juneau County spans, North Central Hardwood Forests the largestUS EPA Level III Ecoregions
- Open occurrence records documented in Juneau County for 2 tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Juneau County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Wisconsin grower plans around — written at state scale, so they stay on the state guidefrom Wisconsin
What this page can’t tell you
- How the season shifts across Juneau County — the ~167 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Juneau County's 490,931 acreswhy one lot differs from the next →
- Which of those 379 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Juneau Countyread your own land →