Rolette, North Dakota, sits in USDA hardiness zone 3b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
The conditions favor cabbage, cranberry, epazote, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Rolette, 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 Rolette 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 Rolette — soil, climate, flood, and parcel records. How we handle your address.
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Rolette — the short answer
Rolette, North Dakota: USDA zone 3b, about 144 days between hard freezes, across 645 acres of city.
- USDA zone
- 3b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 8
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Sep 29
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~144
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 645 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 3b is Rolette's average, not your lot's — a low corner or a tree line moves it. Against Rolette's 144-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Rolette
Each reading below is measured for Rolette itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRolette runs about 144 days between hard freezes — a short growing season.
Long-maturing crops like melons, sweet potatoes, and winter squash can run out of runway before the first hard freeze, ripening late or not at all.
Lead with fast-maturing varieties, and stretch the season on both ends with cold frames, low tunnels, or a greenhouse.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredRolette sits in USDA hardiness zone 3b.
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 Rolette is in
Rolette sits in the Northern Glaciated Plains — EPA Level III, inside the wider Great Plains. That is read at Rolette's own centroid rather than borrowed from Rolette County.
What Grows in Rolette
Every plant below cleared Rolette's own zone 3b and its 144-day season. Each card opens that plant's North Dakota profile. How we score.
Is it too late to plant in Rolette?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Apr 10; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 8 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 29 — long-season crops need about 90 days of runway, quick greens only 30. Short seasons reward decisiveness — quick-maturing varieties late, hardy greens under cover, and next year’s garlic in the ground before it closes.
What's on the federal record near Rolette
Closest first, within ~10 miles of Rolette. Listing isn't leaking, and distance isn't exposure.
- Johnson Oil Co Town and Country TesoroUnderground Storage Tanks · 450 ft
- JOHNSON OIL CO TOWN AND COUNBrownfields · 750 ft
- TOWN & COUNTRY STANDARDBrownfields · 750 ft
- North Central Grain Rolette StationUnderground Storage Tanks · 850 ft
- 160-071-21CCBNitrate · 950 ft
- HARLOW'S BUS SALES INCBrownfields · 1800 ft
- 160-071-29ADDNitrate · 2400 ft
- 160-071-28AAA1Nitrate · 0.9 mi
- 160-071-19DDD2 (NDSWC 86ST 37AVE)Nitrate · 1.0 mi
- 160-071-19DDDNitrate · 1.1 mi
- 160-071-16BBB1Nitrate · 1.9 mi
- 160-071-22DDDNitrate · 1.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Rolette'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 Rolette.
Sources Checked
within ~10 miles of Rolette
Severity Distribution
within ~10 miles of Rolette
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Rolette, Nitrate runs higher than the national average — 132 sites within ~10 miles of Rolette. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Rolette
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 Rolette average
Your land is one point inside Rolette
Everything above resolves to Rolette as a whole — one PHZM band and one 28°F frost record, read across 645 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 city 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 Rolette Average
Rolette Average
- ●USDA Zones 3b, averaged across Rolette
- ●One soil character for all of Rolette
- ●Frost dates read at Rolette's scale: May 8 to Sep 29
YOUR Parcel
- ✓Your exact zone, not Rolette's 3b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Rolette
Pull a site-specific report for your exact address in Rolette, North Dakota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Rolette averages can't show:
We read public map data around Rolette — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Rolette average
How we know this about Rolette
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Rolette’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 city grain anywhere on this page — there is no city-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 Rolette
When does frost risk typically end in Rolette?
The last hard freeze (28°F) in Rolette typically lands around May 8, 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 29.
When is the first frost in Rolette?
The first hard freeze (28°F) in Rolette typically arrives around Sep 29, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 15, so the watching starts about Aug 30 — about 144 days after the spring freeze cleared.
How long is the growing season in Rolette?
Measured between 28°F hard freezes, Rolette sees about 144 frost-free days — roughly May 8 through Sep 29, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 29 to Sep 15, about 109 days.
Is the soil safe to grow vegetables in Rolette?
The federal record around Rolette shows 138 documented sites, mostly Nitrate entries (132), 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 gardeners stretch the season in Rolette?
With about 144 frost-free days between hard freezes, Rolette rewards the classic extension moves: floating row cover buys roughly two to four extra weeks at each shoulder — on this season that is a working window nearer 172 to 200 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 8 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Rolette's scale — its 3b band and its 144-day season. Your yard writes its own version of Rolette'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 Rolette’s own scale
6 of the readings below were taken at Rolette's own scale — its own ~144-day season between 28°F freezes, the 645 acres it covers and 138 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Rolette's own USDA hardiness band, zones 3bUSDA PHZM 2023
- Rolette's own 28°F hard-freeze dates, about May 8 and Sep 29 and the ~144-day span between themNOAA 1991–2020 Climate Normals
- 138 documented contamination sites on the federal record near Rolette, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Rolette's boundary and the 645 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 3b and a ~144-day seasonGrowable Ground crop-matching engine
- The ecoregion at Rolette's own centroid, the Northern Glaciated PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Rolette's 645 acres read through its county's SSURGO summaryfrom Rolette County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Rolette County
- The growing challenges every North Dakota grower plans around — written at state scale, so they stay on the state guidefrom North Dakota
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Rolette County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Rolette's 645 acreswhy one lot differs from the next →
- Which side of Rolette you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 645 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 Rolette-wide figureread your own land →
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