Granton, Wisconsin, sits in USDA hardiness zone 4b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Growers here do well with cabbage, cranberry, turkish rocket, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Granton, 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 Granton 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 Granton — soil, climate, flood, and parcel records. How we handle your address.
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Granton — the short answer
Granton, Wisconsin: USDA zone 4b, about 168 days between hard freezes, across 349 acres of town.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 26
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~168
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 349 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 4b is Granton's average, not your lot's — a low corner or a tree line moves it. Against Granton's 168-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Granton
Each reading below is measured for Granton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGranton runs about 168 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
MeasuredGranton 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 Granton is in
Granton sits in the North Central Hardwood Forests — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Granton's own centroid rather than borrowed from Clark County.
What Grows in Granton
Every plant below cleared Granton's own zone 4b and its 168-day season. Each card opens that plant's Wisconsin profile. How we score.
Is it too late to plant in Granton?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 29; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 26 (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. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
What's on the federal record near Granton
Closest first, within ~10 miles of Granton. Listing isn't leaking, and distance isn't exposure.
- SHORTS FUR FARMUnderground Storage Tanks · 300 ft
- TOWN OF GRANTON SHOPUnderground Storage Tanks · 300 ft
- Naedler FarmsUnderground Storage Tanks · 300 ft
- SPIEGELS GARAGEUnderground Storage Tanks · 300 ft
- Harold ChaneyUnderground Storage Tanks · 300 ft
- VILLAGE OF GRANTON FIRE STATIONUnderground Storage Tanks · 450 ft
- GRANTON CENEX SUPPLYUnderground Storage Tanks · 550 ft
- VILLAGE OF GRANTONUnderground Storage Tanks · 700 ft
- Granton Area School DistUnderground Storage Tanks · 1000 ft
- R S SEPTIC TANK SERVICEBrownfields · 1000 ft
- HUBINGS STANDARD SERVICEUnderground Storage Tanks · 2300 ft
- ZAWISLAN PROPERTYUnderground Storage Tanks · 2600 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Granton'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 Granton.
Total Sites
143
within ~10 miles of Granton
Risk Level
Moderate
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Granton
Severity Distribution
within ~10 miles of Granton
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Granton, two things run higher than the national average within ~10 miles of Granton — CAFO (5 sites) and Underground Storage Tanks (89 sites). That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Granton
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 Granton average
Your land is one point inside Granton
Everything above resolves to Granton as a whole — one PHZM band and one 28°F frost record, read across 349 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 Granton Average
Granton Average
- ●USDA Zones 4b, averaged across Granton
- ●One soil character for all of Granton
- ●Frost dates read at Granton's scale: Apr 26 to Oct 11
YOUR Parcel
- ✓Your exact zone, not Granton's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Granton
Pull a site-specific report for your exact address in Granton, Wisconsin — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Granton averages can't show:
We read public map data around Granton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Granton average
How we know this about Granton
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 Granton’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 Granton
When does frost risk typically end in Granton?
The last hard freeze (28°F) in Granton typically lands around Apr 26, 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 17.
When is the first frost in Granton?
The first hard freeze (28°F) in Granton typically arrives around Oct 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 27, so the watching starts about Sep 11 — about 168 days after the spring freeze cleared.
How long is the growing season in Granton?
Measured between 28°F hard freezes, Granton sees about 168 frost-free days — roughly Apr 26 through Oct 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 17 to Sep 27, about 133 days.
Is the soil safe to grow vegetables in Granton?
The federal record around Granton shows 143 documented sites, mostly Underground Storage Tanks entries (89), the nearest Underground Storage Tanks record under a tenth of a mile out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Granton?
From about Sep 11 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 11 (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 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Granton's scale — its 4b band and its 168-day season. Your yard writes its own version of Granton'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 Granton’s own scale
6 of the readings below were taken at Granton's own scale — its own ~168-day season between 28°F freezes, the 349 acres it covers and 143 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Granton's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Granton's own 28°F hard-freeze dates, about Apr 26 and Oct 11 and the ~168-day span between themNOAA 1991–2020 Climate Normals
- 143 documented contamination sites on the federal record near Granton, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Granton's boundary and the 349 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~168-day seasonGrowable Ground crop-matching engine
- The ecoregion at Granton's own centroid, the North Central Hardwood ForestsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Granton's 349 acres read through its county's SSURGO summaryfrom Clark County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Clark 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 Clark County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Granton's 349 acreswhy one lot differs from the next →
- Which side of Granton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 349 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 Granton-wide figureread your own land →
More in Wisconsin
Wider growing context
What grows across WisconsinGranton sits outside our named growing regions, so Wisconsin as a whole is its closest context here.
Nearby growing guides