Foxholm, North Dakota, sits in USDA hardiness zone 4a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, cabbage, cranberry, turkish rocket, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Foxholm, 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 Foxholm 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 Foxholm — soil, climate, flood, and parcel records. How we handle your address.
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Foxholm — the short answer
Foxholm, North Dakota: USDA zone 4a, about 156 days between hard freezes, across 614 acres of town.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~156
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 614 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 4a is Foxholm's average, not your lot's — a low corner or a tree line moves it. Against Foxholm's 156-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Foxholm
Each reading below is measured for Foxholm itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredFoxholm runs about 156 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
MeasuredFoxholm sits in USDA hardiness zone 4a.
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 Foxholm is in
Foxholm sits in the Northern Glaciated Plains — EPA Level III, inside the wider Great Plains. That is read at Foxholm's own centroid rather than borrowed from Ward County.
What Grows in Foxholm
Every plant below cleared Foxholm's own zone 4a and its 156-day season. Each card opens that plant's North Dakota profile. How we score.
Is it too late to plant in Foxholm?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Apr 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 5 — 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 Foxholm
Closest first, within ~10 miles of Foxholm. Listing isn't leaking, and distance isn't exposure.
- Upper Souris National Wildlife RefugeUnderground Storage Tanks · 5.0 mi
- 156-086-10CCBNitrate · 7.2 mi
- Browns ServiceUnderground Storage Tanks · 7.5 mi
- Minot Air Force BaseUnderground Storage Tanks · 7.5 mi
- MINNESOTA LIMITED - BERTHOLDBrownfields · 7.6 mi
- Farmers Union Oil Company of Berthold and CarpioUnderground Storage Tanks · 7.8 mi
- 156-086-21DCBNitrate · 8.3 mi
- Ward County Highway DeptUnderground Storage Tanks · 8.4 mi
- Deaver Oil CompanyUnderground Storage Tanks · 8.4 mi
- Farmers Union Oil CompanyUnderground Storage Tanks · 8.4 mi
- A and D Service Repair CenterUnderground Storage Tanks · 8.4 mi
- Farmers Union Oil CarpioUnderground Storage Tanks · 8.6 mi
3 more sites are on the record inside the same radius. See them on the map
Measured from Foxholm'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 Foxholm.
Sources Checked
within ~10 miles of Foxholm
Severity Distribution
within ~10 miles of Foxholm
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in Foxholm
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 Foxholm average
Your land is one point inside Foxholm
Everything above resolves to Foxholm as a whole — one PHZM band and one 28°F frost record, read across 614 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 Foxholm Average
Foxholm Average
- ●USDA Zones 4a, averaged across Foxholm
- ●One soil character for all of Foxholm
- ●Frost dates read at Foxholm's scale: May 2 to Oct 5
YOUR Parcel
- ✓Your exact zone, not Foxholm's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Foxholm
Pull a site-specific report for your exact address in Foxholm, North Dakota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Foxholm averages can't show:
We read public map data around Foxholm — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Foxholm average
How we know this about Foxholm
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 Foxholm’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 Foxholm
When does frost risk typically end in Foxholm?
The last hard freeze (28°F) in Foxholm typically lands around May 2, 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 23.
When is the first frost in Foxholm?
The first hard freeze (28°F) in Foxholm typically arrives around Oct 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 21, so the watching starts about Sep 5 — about 156 days after the spring freeze cleared.
How long is the growing season in Foxholm?
Measured between 28°F hard freezes, Foxholm sees about 156 frost-free days — roughly May 2 through Oct 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 23 to Sep 21, about 121 days.
Is the soil safe to grow vegetables in Foxholm?
The federal record around Foxholm is light — 19 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (12), the nearest Underground Storage Tanks record about 5.0 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in Foxholm?
From about Sep 5 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Foxholm's scale — its 4a band and its 156-day season. Your yard writes its own version of Foxholm'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 Foxholm’s own scale
6 of the readings below were taken at Foxholm's own scale — its own ~156-day season between 28°F freezes, the 614 acres it covers and 19 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Foxholm's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Foxholm's own 28°F hard-freeze dates, about May 2 and Oct 5 and the ~156-day span between themNOAA 1991–2020 Climate Normals
- 19 documented contamination sites on the federal record near Foxholm, the closest Underground Storage Tanks record about 5.0 miles out from the town centreFederal environmental registers
- Foxholm's boundary and the 614 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~156-day seasonGrowable Ground crop-matching engine
- The ecoregion at Foxholm's own centroid, the Northern Glaciated PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Foxholm's 614 acres read through its county's SSURGO summaryfrom Ward County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Ward 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 Ward County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Foxholm's 614 acreswhy one lot differs from the next →
- Which side of Foxholm you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 614 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 5.0 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 Foxholm-wide figureread your own land →
More in North Dakota
Wider growing context
What grows across North DakotaFoxholm sits outside our named growing regions, so North Dakota as a whole is its closest context here.
Nearby growing guides