Clyman, Wisconsin, sits in USDA hardiness zone 5a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Expect cabbage, cranberry, lavender, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Clyman, 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 Clyman 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 Clyman — soil, climate, flood, and parcel records. How we handle your address.
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Clyman — the short answer
Clyman, Wisconsin: USDA zone 5a, about 186 days between hard freezes, across 240 acres of town.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~186
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 240 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 Clyman's average, not your lot's — a low corner or a tree line moves it. Against Clyman's 186-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Clyman
Each reading below is measured for Clyman itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredClyman runs about 186 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
MeasuredClyman 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 Clyman is in
Clyman sits in the Southeastern Wisconsin Till Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Clyman's own centroid rather than borrowed from Dodge County.
What Grows in Clyman
Every plant below cleared Clyman's own zone 5a and its 186-day season. Each card opens that plant's Wisconsin profile. How we score.
Is it too late to plant in Clyman?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 18; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 15 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 18 — 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.
Documented around Clyman
Spotted lanternfly documented 26 miles from Clyman, first recorded 2023. What to watch for.
What's on the federal record near Clyman
Closest first, within ~10 miles of Clyman. Listing isn't leaking, and distance isn't exposure.
- DG-10/15E/28-0064Nitrate · 1100 ft
- CLYMAN OIL CO INCUnderground Storage Tanks · 1100 ft
- DG-10/15E/28-0016Nitrate · 1100 ft
- CLYMAN DPWUnderground Storage Tanks · 1200 ft
- SENECA FOODS CORPToxics Release Inventory · 1400 ft
- SENECA FOODS CORPBrownfields · 1400 ft
- DG-10/15E/28-0068Nitrate · 1700 ft
- Seneca FoodsUnderground Storage Tanks · 2000 ft
- MARY SELLEUnderground Storage Tanks · 1.2 mi
- Donald R SchultzUnderground Storage Tanks · 2.2 mi
- DG-10/15E/14-0896Nitrate · 2.6 mi
- BRESSE BLEU INCToxics Release Inventory · 3.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Clyman'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 Clyman.
Total Sites
420
within ~10 miles of Clyman
Risk Level
Elevated
Highest-severity
3 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Clyman
Severity Distribution
within ~10 miles of Clyman
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Clyman, Underground Storage Tanks runs higher than the national average — 262 sites within ~10 miles of Clyman. 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 Clyman
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 Clyman average
Your land is one point inside Clyman
Everything above resolves to Clyman as a whole — one PHZM band and one 28°F frost record, read across 240 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 Clyman Average
Clyman Average
- ●USDA Zones 5a, averaged across Clyman
- ●One soil character for all of Clyman
- ●Frost dates read at Clyman's scale: Apr 15 to Oct 18
YOUR Parcel
- ✓Your exact zone, not Clyman's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Clyman
Pull a site-specific report for your exact address in Clyman, Wisconsin — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Clyman averages can't show:
We read public map data around Clyman — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Clyman average
How we know this about Clyman
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 Clyman’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 Clyman
When does frost risk typically end in Clyman?
The last hard freeze (28°F) in Clyman typically lands around Apr 15, 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 6.
When is the first frost in Clyman?
The first hard freeze (28°F) in Clyman typically arrives around Oct 18, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 4, so the watching starts about Sep 18 — about 186 days after the spring freeze cleared.
How long is the growing season in Clyman?
Measured between 28°F hard freezes, Clyman sees about 186 frost-free days — roughly Apr 15 through Oct 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 6 to Oct 4, about 151 days.
Is the soil safe to grow vegetables in Clyman?
The federal record around Clyman is a meaningful one — 420 documented sites, mostly Underground Storage Tanks entries (262), the nearest Nitrate 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 Clyman?
From about Sep 18 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 18 (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 18. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Clyman's scale — its 5a band and its 186-day season. Your yard writes its own version of Clyman'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 Clyman’s own scale
7 of the readings below were taken at Clyman's own scale — its own ~186-day season between 28°F freezes, the 240 acres it covers and 420 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Clyman's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Clyman's own 28°F hard-freeze dates, about Apr 15 and Oct 18 and the ~186-day span between themNOAA 1991–2020 Climate Normals
- 420 documented contamination sites on the federal record near Clyman, the closest Nitrate record about 0.2 miles out from the town centreFederal environmental registers
- Clyman's boundary and the 240 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~186-day seasonGrowable Ground crop-matching engine
- The ecoregion at Clyman's own centroid, the Southeastern Wisconsin Till PlainsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Clymanlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Clyman's 240 acres read through its county's SSURGO summaryfrom Dodge County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Dodge 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 Dodge County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Clyman's 240 acreswhy one lot differs from the next →
- Which side of Clyman you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 240 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate 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 Clyman-wide figureread your own land →
More in Wisconsin
Wider growing context
What grows across WisconsinClyman sits outside our named growing regions, so Wisconsin as a whole is its closest context here.
Nearby growing guides