Marysville, Montana, sits in USDA hardiness zone 4b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Crops well matched to these conditions include cabbage, cranberry, cilantro, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Marysville, 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 Marysville 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 Marysville — soil, climate, flood, and parcel records. How we handle your address.
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Marysville — the short answer
Marysville, Montana: USDA zone 4b, about 126 days between hard freezes, across 319 acres of town.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 19
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Sep 22
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~126
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 319 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 4b is Marysville's average, not your lot's — a low corner or a tree line moves it. Against Marysville's 126-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Marysville
Each reading below is measured for Marysville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMarysville runs about 126 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
MeasuredMarysville sits in USDA hardiness zone 4b.
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 Marysville is in
Marysville sits in the Middle Rockies — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Marysville's own centroid rather than borrowed from Lewis and Clark County.
What Grows in Marysville
Every plant below cleared Marysville's own zone 4b and its 126-day season. Each card opens that plant's Montana profile. How we score.
Is it too late to plant in Marysville?
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 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 19 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 22 — long-season crops need about 90 days of runway, quick greens only 30. In a season this compact, fast finishers and cold-hardy greens do the late work, and garlic tucked in before the freeze repays you next summer.
What's on the federal record near Marysville
Closest first, within ~10 miles of Marysville. Listing isn't leaking, and distance isn't exposure.
- MARYSVILLE HOUSEUnderground Storage Tanks · 450 ft
- 12N06W36BCDD01Nitrate · 650 ft
- Drumlummon MineMining · 1800 ft
- 12N06W35ACAB02Nitrate · 0.5 mi
- Ottawa MineMining · 0.8 mi
- Cruse MineMining · 0.9 mi
- Marysville DistrictMining · 1.5 mi
- Little Ox MineMining · 1.8 mi
- Little OxMining · 1.9 mi
- Piegan-Gloster MineMining · 2.0 mi
- M and L MineMining · 2.0 mi
- Empire MineMining · 2.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Marysville'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 Marysville.
Total Sites
94
within ~10 miles of Marysville
Risk Level
High
Highest-severity
8 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Marysville
Severity Distribution
within ~10 miles of Marysville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Marysville, two things run higher than the national average within ~10 miles of Marysville — Mining (68 sites) and Superfund (8 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Marysville
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 Marysville average
Your land is one point inside Marysville
Everything above resolves to Marysville as a whole — one PHZM band and one 28°F frost record, read across 319 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 Marysville Average
Marysville Average
- ●USDA Zones 4b, averaged across Marysville
- ●One soil character for all of Marysville
- ●Frost dates read at Marysville's scale: May 19 to Sep 22
YOUR Parcel
- ✓Your exact zone, not Marysville's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Marysville
Pull a site-specific report for your exact address in Marysville, Montana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Marysville averages can't show:
We read public map data around Marysville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Marysville average
How we know this about Marysville
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 Marysville’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 Marysville
When does frost risk typically end in Marysville?
The last hard freeze (28°F) in Marysville typically lands around May 19, 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 Jun 9.
When is the first frost in Marysville?
The first hard freeze (28°F) in Marysville typically arrives around Sep 22, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 8, so the watching starts about Aug 23 — about 126 days after the spring freeze cleared.
How long is the growing season in Marysville?
Measured between 28°F hard freezes, Marysville sees about 126 frost-free days — roughly May 19 through Sep 22, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 9 to Sep 8, about 91 days.
Is the soil safe to grow vegetables in Marysville?
The federal record around Marysville runs heavier than most — 94 documented sites, mostly Mining entries (68), the nearest Underground Storage Tanks record under a tenth of a mile out — 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.
How do gardeners stretch the season in Marysville?
With about 126 frost-free days between hard freezes, Marysville 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 154 to 182 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 19 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Marysville's scale — its 4b band and its 126-day season. Your yard writes its own version of Marysville'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 Marysville’s own scale
6 of the readings below were taken at Marysville's own scale — its own ~126-day season between 28°F freezes, the 319 acres it covers and 94 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Marysville's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Marysville's own 28°F hard-freeze dates, about May 19 and Sep 22 and the ~126-day span between themNOAA 1991–2020 Climate Normals
- 94 documented contamination sites on the federal record near Marysville, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Marysville's boundary and the 319 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~126-day seasonGrowable Ground crop-matching engine
- The ecoregion at Marysville's own centroid, the Middle RockiesUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Marysville's 319 acres read through its county's SSURGO summaryfrom Lewis and Clark County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Lewis and Clark 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 Lewis and Clark County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Marysville's 319 acreswhy one lot differs from the next →
- Which side of Marysville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 319 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 Marysville-wide figureread your own land →
More in Montana
Wider growing context
What grows across MontanaMarysville sits outside our named growing regions, so Montana as a whole is its closest context here.