Wheatland, Montana, sits in USDA hardiness zone 5a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
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 Wheatland, 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 Wheatland 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 Wheatland — soil, climate, flood, and parcel records. How we handle your address.
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Wheatland — the short answer
Wheatland, Montana: USDA zone 5a, about 152 days between hard freezes, across 48K acres of town.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~152
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 48K 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 Wheatland's average, not your lot's — a low corner or a tree line moves it. Against Wheatland's 152-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Wheatland
Each reading below is measured for Wheatland itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWheatland runs about 152 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
MeasuredWheatland 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 Wheatland is in
Wheatland sits in the Middle Rockies — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Wheatland's own centroid rather than borrowed from Broadwater County.
What Grows in Wheatland
Every plant below cleared Wheatland's own zone 5a and its 152-day season. Each card opens that plant's Montana profile. How we score.
Is it too late to plant in Wheatland?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Apr 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 3 — long-season crops need about 90 days of runway, quick greens only 30. As the window narrows, the plantings just get faster — fall brassicas, then greens, then garlic to finish.
What's on the federal record near Wheatland
Closest first, within ~10 miles of Wheatland. Listing isn't leaking, and distance isn't exposure.
- Copper CityMining · 2.1 mi
- Pennsylvania MineMining · 2.1 mi
- Copper Queen LodeMining · 2.1 mi
- Silver King LodeMining · 2.1 mi
- Copper King LodeMining · 2.1 mi
- North Star LodeMining · 2.1 mi
- PennsylvaniaMining · 2.1 mi
- Lorna No. 2 LodeMining · 2.1 mi
- Stella #2 LodeMining · 2.1 mi
- New York LodeMining · 2.1 mi
- Incline LodeMining · 2.1 mi
- Copper City MineMining · 2.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Wheatland'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 Wheatland.
Total Sites
162
within ~10 miles of Wheatland
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Wheatland
Severity Distribution
within ~10 miles of Wheatland
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Wheatland, two things run higher than the national average within ~10 miles of Wheatland — Nitrate (110 sites) and Mining (13 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Wheatland
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 Wheatland average
Your land is one point inside Wheatland
Everything above resolves to Wheatland as a whole — one PHZM band and one 28°F frost record, read across 48K 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 Wheatland Average
Wheatland Average
- ●USDA Zones 5a, averaged across Wheatland
- ●One soil character for all of Wheatland
- ●Frost dates read at Wheatland's scale: May 4 to Oct 3
YOUR Parcel
- ✓Your exact zone, not Wheatland's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Wheatland
Pull a site-specific report for your exact address in Wheatland, Montana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Wheatland averages can't show:
We read public map data around Wheatland — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Wheatland average
How we know this about Wheatland
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 Wheatland’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 Wheatland
When does frost risk typically end in Wheatland?
The last hard freeze (28°F) in Wheatland typically lands around May 4, 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 25.
When is the first frost in Wheatland?
The first hard freeze (28°F) in Wheatland typically arrives around Oct 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 19, so the watching starts about Sep 3 — about 152 days after the spring freeze cleared.
How long is the growing season in Wheatland?
Measured between 28°F hard freezes, Wheatland sees about 152 frost-free days — roughly May 4 through Oct 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 25 to Sep 19, about 117 days.
Is the soil safe to grow vegetables in Wheatland?
The federal record around Wheatland shows 162 documented sites, mostly Nitrate entries (110), the nearest Mining record about 2.1 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 Wheatland?
From about Sep 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 Oct 3 (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 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Wheatland's scale — its 5a band and its 152-day season. Your yard writes its own version of Wheatland'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 Wheatland’s own scale
6 of the readings below were taken at Wheatland's own scale — its own ~152-day season between 28°F freezes, the 47,650 acres it covers and 162 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Wheatland's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Wheatland's own 28°F hard-freeze dates, about May 4 and Oct 3 and the ~152-day span between themNOAA 1991–2020 Climate Normals
- 162 documented contamination sites on the federal record near Wheatland, the closest Mining record about 2.1 miles out from the town centreFederal environmental registers
- Wheatland's boundary and the 47,650 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~152-day seasonGrowable Ground crop-matching engine
- The ecoregion at Wheatland's own centroid, the Middle RockiesUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Wheatland's 47,650 acres read through its county's SSURGO summaryfrom Broadwater County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Broadwater County
- The growing challenges every Montana grower plans around — written at state scale, so they stay on the state guidefrom Montana
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Broadwater County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Wheatland's 47,650 acreswhy one lot differs from the next →
- Which side of Wheatland you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 47,650 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Mining record about 2.1 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 Wheatland-wide figureread your own land →
More in Montana
Wider growing context
What grows across MontanaWheatland sits outside our named growing regions, so Montana as a whole is its closest context here.
Nearby growing guides