North Dakota spans USDA hardiness zones 3b-4b, with a growing season of about 157 frost-free days — room for most garden staples, with a calendar tight enough that frost dates still call the shots.
Its growing climate is shaped by 14-22 inches of annual rainfall, a median of roughly 1,913 growing-degree days (base 50°F), and about 2,500 winter chill hours for tree fruit, which together set what ripens and what struggles. The ground itself runs to prairie loam, clay (Red River Valley), sandy loam, and glacial till; drainage character, more than fertility, is usually what sorts the thrivers from the strugglers. The state line hides real variety: Red River Valley, The North Dakota Badlands, and Turtle Mountains each keep their own zone band and frost dates. Well-matched crops include sunflower, potato, grape (frontenac), and american elm, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Grounded inUSDA PHZM•NOAA Climate Normals•USDA NRCS SSURGO•GDD (PRISM 1991-2020 normals)•Chill hours (PRISM 1991-2020 normals)•USDA hardiness sub-region map•EPA FRS•USDA PLANTS•Growable Ground suitability scoring
North Dakota spans zones 3b-4b, but your yard sits in exactly one — and slope, tree cover, and low spots nudge it further. 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 North Dakota — soil, climate, flood, and parcel records. How we handle your address.
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Distinct growing regions within North Dakota — each has its own zones, soils, and signature crops.
North Dakota: USDA zones 3b-4b, about 157 frost-free days in a typical county, 53 counties.
The middle half of this state’s counties. Tender transplants usually wait 2–3 weeks past the last hard freeze.
North Dakota does not have one growing season. Across all 395 of its towns that carry their own 30-year record, the shortest measured season is Tioga's at 137 days and the longest is Lidgerwood's at 173 — a 36-day spread inside one state.
Neither end is a lone reading — another 38 towns measure within 10 days of Tioga and 117 sit within 10 days of Lidgerwood. These are real pockets, so the number to plant against is your own town's, not the state average.
NOAA Regional Climate Centers ACIS (1991–2020), 30-year daily minimum record
Zone 3b-4b is North Dakota's average, not your lot's — a low corner or a tree line moves it. Against North Dakota's 157-day season, see what your own ground reads.
The soil types that dominate North Dakota — how each drains decides more about crop success than almost anything else. Tap any soil to learn what it is and how to work with it. Each photo is a representative profile of that soil type; the named series is where it was documented, which is often another state.
Drainage
Good. The crumb structure that prairie roots built lets water in and holds it like a sponge, releasing it steadily through the season.
What thrives
This is some of the most productive crop ground on Earth — corn, beans, squash, brassicas, and nearly any vegetable you plant. Prairie natives like coneflower and big bluestem are, unsurprisingly, right at home.
Drainage
Slow. Water enters clay reluctantly and leaves it the same way, so wet springs keep it cold and unworkable longer than lighter soils.
What thrives
Once established, heavy feeders prosper — brassicas, beans, corn, and many fruit trees ride clay’s nutrient supply and summer moisture reserve. Daylilies, roses, and prairie perennials handle it without complaint.
Drainage
Fast. The sand fraction opens the soil up, so water moves through the root zone quickly and the surface rarely stays soggy. The trade is that nutrients ride out with the water.
What thrives
Root crops love it — carrots, potatoes, radishes, and onions size up cleanly in ground they can push through. Melons, sweet potatoes, asparagus, and most herbs appreciate the warmth and the drainage.
Drainage
Variable by the shovelful. Sandy till drains freely; dense, compacted till (hardpan) can perch water above it after snowmelt and heavy rain.
What thrives
Apples, stone fruits, brambles, and the whole northern vegetable garden do well on till — much of New England and the upper Midwest farms it. Deep-rooted perennials work through the stony structure happily.
Soil data: USDA NRCS SSURGO · Soil types explained
Plants well-suited to North Dakota's climate, soils, and growing season — each links to its full growing profile.
For most of the year, no — what changes is which crops still fit the days remaining. Across North Dakota, cool-season planting typically opens about four weeks before the local last hard freeze — county medians put that freeze near May 3, with the middle half of counties between Apr 30 and May 6 (NOAA 1991–2020 climate normals). Tender transplants wait two to three weeks past it, and fall planting counts back from first freezes mostly between Oct 4 and Oct 9 — 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.
The plants North Dakota put its name on — cultural emblems, not growing recommendations.
Wild prairie rose
Rosa arkansana
Designated 1907.
Ulmus americana
Designated 1947. In our plant library — see its full growing profile.
Designated 2007. In our plant library — see its full growing profile.
Plants the USDA PLANTS Database documents as native and present in North Dakota — a real per-state range, not just a zone match. Ordered by how closely each plant’s published hardiness range matches North Dakota’s zones 3b-4b, so this is a shortlist by climate fit, not a ranking of which plants matter most here. Presence is statewide, so a plant may still be uncommon in your specific county; your state’s Cooperative Extension or a native-plant society is the local authority.
US-native plants whose hardiness range overlaps North Dakota’s USDA zones 3b-4b but which USDA PLANTS doesn’t map to a single state range here. Zone overlap is a starting filter, not a range map.
What an experienced grower plans around here — each one has a move.
Extreme cold (-40F) and short growing season
Cold-proven varieties plus a high tunnel make North Dakota's short season dependable — northern growers' standard kit.
Persistent wind desiccates plants
A windbreak is the highest-return structure on the northern plains — even a snow fence changes what survives.
Low rainfall in western ND
Out west, drip irrigation and mulch decide the season — set the water system up front.
For cultivar selection, pest pressure, and planting-time guidance specific to North Dakota, the NDSU Extension is the authoritative local source.
Safe to Grow Here?What the federal record shows across North Dakota — and how to grow with it.
We checked the federal record across North Dakota — 20,590 documented sites across 6 of the 9 source types we track.
The most significant on record: 22 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
North Dakota carries one of the heavier federal records we track — and that's not a verdict on your yard. Proximity to a documented site is information, not a diagnosis: nothing here says any particular parcel is affected. It does earn one concrete step — before food beds go in the ground, a professional soil test tells you exactly what you're working with, and raised beds with clean imported soil grow well almost anywhere in the meantime.
Sources Checked
across North Dakota
Severity Distribution
across North Dakota
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around North Dakota, Nitrate runs higher than the national average — 15,844 sites across North Dakota. 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).
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
Everything above resolves to North Dakota as a whole — a footprint spanning USDA zones 3b-4b. Your parcel sits in exactly one of them. 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 state 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 statewide average.
State averages sketch the shape. Your soil, sun exposure, drainage, and microclimate decide what actually takes. Pull a site-specific report for your exact parcel.
Enter your address. We read your soil, sun, drainage, and frost dates, then score 1,086 plants against the real conditions on your land.
Three things about your lot that North Dakota averages can't show:
We read public map data around North Dakota — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the North Dakota average
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read per county and aggregated to the state band; the growing season from NOAA Regional Climate Centers ACIS 1991–2020 28°F normals, read at each county’s own record; rainfall from NOAA Climate Normals; soils from USDA NRCS SSURGO; boundaries from US Census TIGER/Line 2025; the contamination record from the federal sources named in that beat above. Where a county carries no record of its own, it is absent from the figure rather than filled in.
North Dakota spans USDA hardiness zones 3b-4b — which is to say winter's coldest night runs from about −35°F to −20°F depending where in North Dakota you are, averaged over 1991–2020 (USDA PHZM 2023).
For most of the year, no — what changes is which crops still fit the days remaining. Across North Dakota, cool-season planting typically opens about four weeks before the local last hard freeze — county medians put that freeze near May 3, with the middle half of counties between Apr 30 and May 6 (NOAA 1991–2020 climate normals). Tender transplants wait two to three weeks past it, and fall planting counts back from first freezes mostly between Oct 4 and Oct 9 — 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.
Across North Dakota, the middle half of counties see their last hard freeze (28°F) between about Apr 30 and May 6, with a county median near May 3 (NOAA 1991–2020 climate normals). 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 24.
Measured between 28°F hard freezes, growing seasons across North Dakota's counties mostly run about 151 to 162 days, with a county median near 157 (NOAA 1991–2020 climate normals). Tender crops get a somewhat shorter practical window, since lighter frosts reach a few weeks past the hard-freeze dates on both ends.
North Dakota's zones 3b-4b support a wide range — strong performers include Sunflower, Potato, Grape (Frontenac), American Elm, and Rhubarb. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Officially, North Dakota spans USDA zones 3b-4b (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,086 plants against what's actually there.
The federal record across North Dakota runs heavier than most — 20,590 documented sites, mostly Nitrate entries (15,844) — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
Start with three facts. North Dakota spans USDA zones 3b-4b, which sets what survives winter; last hard freezes range from about Apr 30 to May 6 across its counties (NOAA 1991–2020 climate normals); and 20,590 documented sites sit on the federal record here, so a soil test before food beds is the smart first step. From there, matching plants to your actual soil and sun is the fun part.
Everything above is measured at North Dakota's scale — its 3b-4b band and its 157-day season. Your yard writes its own version of North Dakota's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
6 of the readings below were taken at North Dakota's own scale — the full zone 3b-4b span inside its borders, the 4 soil types that dominate its ground and 20,590 documented sites on its federal record; anything it cannot resolve at this scale is named below.
Measured here
What this page can’t tell you
Explore growing conditions by county — each has its own zone range and land area.
Explore growing conditions by city or town in North Dakota.
North Dakota shares its dominant growing region with these states — a useful comparison if you're weighing where a crop will behave the same way.
