Friesland, Wisconsin, sits in USDA hardiness zone 5a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
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 Friesland, 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 Friesland 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 Friesland — soil, climate, flood, and parcel records. How we handle your address.
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Friesland — the short answer
Friesland, Wisconsin: USDA zone 5a, about 185 days between hard freezes, across 646 acres of town.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~185
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 646 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 5a is Friesland's average, not your lot's — a low corner or a tree line moves it. Against Friesland's 185-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Friesland
Each reading below is measured for Friesland itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredFriesland runs about 185 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
MeasuredFriesland sits in USDA hardiness zone 5a.
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 Friesland is in
Friesland sits in the Southeastern Wisconsin Till Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Friesland's own centroid rather than borrowed from Columbia County.
What Grows in Friesland
Every plant below cleared Friesland's own zone 5a and its 185-day season. Each card opens that plant's Wisconsin profile. How we score.
Is it too late to plant in Friesland?
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 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 20 — 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 Friesland
Spotted lanternfly documented 1 miles from Friesland, first recorded 2023. What to watch for.
What's on the federal record near Friesland
Closest first, within ~10 miles of Friesland. Listing isn't leaking, and distance isn't exposure.
- ETTA DOLGNER - PROD SERVICE STATIONUnderground Storage Tanks · 400 ft
- FRIESLAND MOTORSUnderground Storage Tanks · 450 ft
- CLIFFS INCUnderground Storage Tanks · 450 ft
- CO-13/12E/21-0002Nitrate · 600 ft
- Cupery & de Young Storage CorpUnderground Storage Tanks · 750 ft
- DE YOUNG TRANSPORTATION INCUnderground Storage Tanks · 950 ft
- FROEHLICH TEXACOUnderground Storage Tanks · 1100 ft
- JAMES PICKHARDTUnderground Storage Tanks · 0.7 mi
- HWY A FARMUnderground Storage Tanks · 0.7 mi
- LUGENE DYKSTRAUnderground Storage Tanks · 0.7 mi
- ARTHUR DE YOUNGUnderground Storage Tanks · 0.7 mi
- GALE QUADEUnderground Storage Tanks · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Friesland'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 Friesland.
Total Sites
287
within ~10 miles of Friesland
Risk Level
Elevated
Highest-severity
8 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Friesland
Severity Distribution
within ~10 miles of Friesland
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Friesland, two things run higher than the national average within ~10 miles of Friesland — CAFO (4 sites) and Nitrate (80 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Friesland
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 Friesland average
Your land is one point inside Friesland
Everything above resolves to Friesland as a whole — one PHZM band and one 28°F frost record, read across 646 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 Friesland Average
Friesland Average
- ●USDA Zones 5a, averaged across Friesland
- ●One soil character for all of Friesland
- ●Frost dates read at Friesland's scale: Apr 18 to Oct 20
YOUR Parcel
- ✓Your exact zone, not Friesland's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Friesland
Pull a site-specific report for your exact address in Friesland, Wisconsin — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Friesland averages can't show:
We read public map data around Friesland — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Friesland average
How we know this about Friesland
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 Friesland’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 Friesland
When does frost risk typically end in Friesland?
The last hard freeze (28°F) in Friesland typically lands around Apr 18, 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 9.
When is the first frost in Friesland?
The first hard freeze (28°F) in Friesland typically arrives around Oct 20, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 6, so the watching starts about Sep 20 — about 185 days after the spring freeze cleared.
How long is the growing season in Friesland?
Measured between 28°F hard freezes, Friesland sees about 185 frost-free days — roughly Apr 18 through Oct 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 9 to Oct 6, about 150 days.
Is the soil safe to grow vegetables in Friesland?
The federal record around Friesland is a meaningful one — 287 documented sites, mostly Underground Storage Tanks entries (168), the nearest Underground Storage Tanks record under a tenth of a mile 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 Friesland?
From about Sep 20 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 20 (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 20. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Friesland's scale — its 5a band and its 185-day season. Your yard writes its own version of Friesland'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 Friesland’s own scale
7 of the readings below were taken at Friesland's own scale — its own ~185-day season between 28°F freezes, the 646 acres it covers and 287 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Friesland's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Friesland's own 28°F hard-freeze dates, about Apr 18 and Oct 20 and the ~185-day span between themNOAA 1991–2020 Climate Normals
- 287 documented contamination sites on the federal record near Friesland, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Friesland's boundary and the 646 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~185-day seasonGrowable Ground crop-matching engine
- The ecoregion at Friesland's own centroid, the Southeastern Wisconsin Till PlainsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Frieslandlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Friesland's 646 acres read through its county's SSURGO summaryfrom Columbia County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Columbia 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 Columbia County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Friesland's 646 acreswhy one lot differs from the next →
- Which side of Friesland you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 646 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Friesland-wide figureread your own land →
More in Wisconsin
Wider growing context
What grows across WisconsinFriesland sits outside our named growing regions, so Wisconsin as a whole is its closest context here.