Saukville, Wisconsin, sits in USDA hardiness zone 5b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Well-matched crops include cabbage, cranberry, lavender, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Saukville, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Saukville lot. 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 Saukville — soil, climate, flood, and parcel records. How we handle your address.
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Saukville — the short answer
Saukville, Wisconsin: USDA zone 5b, about 194 days between hard freezes, across 2K acres of town.
- USDA zone
- 5b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 17
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~194
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 2K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 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 5b is Saukville's average, not your lot's — a low corner or a tree line moves it. Against Saukville's 194-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Saukville
Each reading below is measured for Saukville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSaukville runs about 194 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
MeasuredSaukville sits in USDA hardiness zone 5b.
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 Saukville is in
Saukville sits in the Southeastern Wisconsin Till Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Saukville's own centroid rather than borrowed from Ozaukee County.
What Grows in Saukville
Every plant below cleared Saukville's own zone 5b and its 194-day season. Each card opens that plant's Wisconsin profile. How we score.
Is it too late to plant in Saukville?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 20; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 17 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 28 — long-season crops need about 90 days of runway, quick greens only 30. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
What's on the federal record near Saukville
Closest first, within ~10 miles of Saukville. Listing isn't leaking, and distance isn't exposure.
- LEESON ELECTRIC CORPToxics Release Inventory · 1000 ft
- CRAMER COIL & TRANSFORMER COBrownfields · 1200 ft
- CUSTOM COLOR & FILLING LLCBrownfields · 1500 ft
- CUSTOM COLOR & FILLING LLCToxics Release Inventory · 1500 ft
- EREZTECH LABS LLCBrownfields · 1900 ft
- JOHNSON BRASS & MACHINE FOUNDRY INCBrownfields · 2200 ft
- JOHNSON BRASS & MACHINE FOUNDRY INCToxics Release Inventory · 2200 ft
- JOHNSON BRASS & MACHINEUnderground Storage Tanks · 2200 ft
- SAUK TECHNOLOGIESBrownfields · 2300 ft
- SAUK TECHNOLOGIESToxics Release Inventory · 2300 ft
- JENEIL BIOTECH INCBrownfields · 2400 ft
- INJECTECBrownfields · 2400 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Saukville'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 Saukville.
Sources Checked
within ~10 miles of Saukville
Severity Distribution
within ~10 miles of Saukville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Saukville, Toxics Release Inventory runs higher than the national average — 49 sites within ~10 miles of Saukville. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Saukville
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 Saukville average
Your land is one point inside Saukville
Everything above resolves to Saukville as a whole — one PHZM band and one 28°F frost record, read across 2K 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 town 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 local average.
Your Lot vs the Saukville Average
Saukville Average
- ●USDA Zones 5b, averaged across Saukville
- ●One soil character for all of Saukville
- ●Frost dates read at Saukville's scale: Apr 17 to Oct 28
YOUR Parcel
- ✓Your exact zone, not Saukville's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Saukville
Pull a site-specific report for your exact address in Saukville, Wisconsin — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Saukville averages can't show:
We read public map data around Saukville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Saukville average
How we know this about Saukville
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Saukville’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at town grain anywhere on this page — there is no town-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Saukville
When does frost risk typically end in Saukville?
The last hard freeze (28°F) in Saukville typically lands around Apr 17, 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 8.
When is the first frost in Saukville?
The first hard freeze (28°F) in Saukville typically arrives around Oct 28, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 14, so the watching starts about Sep 28 — about 194 days after the spring freeze cleared.
How long is the growing season in Saukville?
Measured between 28°F hard freezes, Saukville sees about 194 frost-free days — roughly Apr 17 through Oct 28, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 8 to Oct 14, about 159 days.
Is the soil safe to grow vegetables in Saukville?
The federal record around Saukville is a meaningful one — 686 documented sites, mostly Underground Storage Tanks entries (327), the nearest Toxics Release Inventory record about 0.2 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.
How do I protect my plants from frost in Saukville?
From about Sep 28 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Oct 28 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Oct 28. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Saukville's scale — its 5b band and its 194-day season. Your yard writes its own version of Saukville's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Saukville’s own scale
6 of the readings below were taken at Saukville's own scale — its own ~194-day season between 28°F freezes, the 2,266 acres it covers and 686 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Saukville's own USDA hardiness band, zones 5bUSDA PHZM 2023
- Saukville's own 28°F hard-freeze dates, about Apr 17 and Oct 28 and the ~194-day span between themNOAA 1991–2020 Climate Normals
- 686 documented contamination sites on the federal record near Saukville, the closest Toxics Release Inventory record about 0.2 miles out from the town centreFederal environmental registers
- Saukville's boundary and the 2,266 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~194-day seasonGrowable Ground crop-matching engine
- The ecoregion at Saukville's own centroid, the Southeastern Wisconsin Till PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Saukville's 2,266 acres read through its county's SSURGO summaryfrom Ozaukee County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Ozaukee County
- The growing challenges every Wisconsin grower plans around — written at state scale, so they stay on the state guidefrom Wisconsin
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Ozaukee County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Saukville's 2,266 acreswhy one lot differs from the next →
- Which side of Saukville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,266 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Toxics Release Inventory record about 0.2 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Saukville-wide figureread your own land →