Fargo, Oklahoma, sits in USDA hardiness zone 7a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Growers here do well with cabbage, hazelnut, california poppy, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Fargo, 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 Fargo 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 Fargo — soil, climate, flood, and parcel records. How we handle your address.
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Fargo — the short answer
Fargo, Oklahoma: USDA zone 7a, about 215 days between hard freezes, across 373 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~215
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 373 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 7a is Fargo's average, not your lot's — a low corner or a tree line moves it. Against Fargo's 215-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Fargo
Each reading below is measured for Fargo itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredFargo runs about 215 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredFargo sits in USDA hardiness zone 7a.
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 Fargo is in
Fargo sits in the Southwestern Tablelands — EPA Level III, inside the wider Great Plains. That is read at Fargo's own centroid rather than borrowed from Ellis County.
What Grows in Fargo
Every plant below cleared Fargo's own zone 7a and its 215-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Fargo?
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 Mar 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 2 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
What's on the federal record near Fargo
Closest first, within ~10 miles of Fargo. Listing isn't leaking, and distance isn't exposure.
- City Of ShattuckUnderground Storage Tanks · 650 ft
- Rita's Quick Stop, LLCUnderground Storage Tanks · 800 ft
- Fargo SchoolUnderground Storage Tanks · 1100 ft
- CGB Fargo FacilityUnderground Storage Tanks · 1100 ft
- Gage Quick Stop LlcUnderground Storage Tanks · 1100 ft
- 22N-22W-31 BAA 1Nitrate · 2.4 mi
- 22N-22W-21 CBC 2Nitrate · 3.1 mi
- Sutter Ranch CorporationUnderground Storage Tanks · 3.3 mi
- 22N-22W-34 BBB 1Nitrate · 4.5 mi
- 21N-22W-03 ABB 1Nitrate · 5.4 mi
- 22N-22W-36 BBB 1Nitrate · 6.3 mi
- 21N-22W-21 BCB 1Nitrate · 6.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Fargo'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 Fargo.
Total Sites
65
within ~10 miles of Fargo
Risk Level
Moderate
Highest-severity
5 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Fargo
Severity Distribution
within ~10 miles of Fargo
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Fargo, two things run higher than the national average within ~10 miles of Fargo — Nitrate (40 sites) and Toxics Release Inventory (5 sites). That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Fargo
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 Fargo average
Your land is one point inside Fargo
Everything above resolves to Fargo as a whole — one PHZM band and one 28°F frost record, read across 373 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 Fargo Average
Fargo Average
- ●USDA Zones 7a, averaged across Fargo
- ●One soil character for all of Fargo
- ●Frost dates read at Fargo's scale: Apr 1 to Nov 2
YOUR Parcel
- ✓Your exact zone, not Fargo's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Fargo
Pull a site-specific report for your exact address in Fargo, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Fargo averages can't show:
We read public map data around Fargo — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Fargo average
How we know this about Fargo
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 Fargo’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 Fargo
When does frost risk typically end in Fargo?
The last hard freeze (28°F) in Fargo typically lands around Apr 1, 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 Apr 22.
When is the first frost in Fargo?
The first hard freeze (28°F) in Fargo typically arrives around Nov 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 19, so the watching starts about Oct 3 — about 215 days after the spring freeze cleared.
How long is the growing season in Fargo?
Measured between 28°F hard freezes, Fargo sees about 215 frost-free days — roughly Apr 1 through Nov 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 22 to Oct 19, about 180 days.
Is the soil safe to grow vegetables in Fargo?
The federal record around Fargo shows 65 documented sites, mostly Nitrate entries (40), the nearest Underground Storage Tanks record about 0.1 miles 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 Fargo?
From about Oct 3 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 Nov 2 (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 Nov 2. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Fargo's scale — its 7a band and its 215-day season. Your yard writes its own version of Fargo'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 Fargo’s own scale
6 of the readings below were taken at Fargo's own scale — its own ~215-day season between 28°F freezes, the 373 acres it covers and 65 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Fargo's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Fargo's own 28°F hard-freeze dates, about Apr 1 and Nov 2 and the ~215-day span between themNOAA 1991–2020 Climate Normals
- 65 documented contamination sites on the federal record near Fargo, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Fargo's boundary and the 373 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~215-day seasonGrowable Ground crop-matching engine
- The ecoregion at Fargo's own centroid, the Southwestern TablelandsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Fargo's 373 acres read through its county's SSURGO summaryfrom Ellis County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Ellis County
- The growing challenges every Oklahoma grower plans around — written at state scale, so they stay on the state guidefrom Oklahoma
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Ellis County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Fargo's 373 acreswhy one lot differs from the next →
- Which side of Fargo you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 373 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Fargo-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaFargo sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides