Seeley Lake, Montana, sits in USDA hardiness zone 4a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Well-matched crops include okra, cranberry, cilantro, and zucchini, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Seeley Lake, 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 Seeley Lake 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 Seeley Lake — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Seeley Lake — the short answer
Seeley Lake, Montana: USDA zone 4a, about 113 days between hard freezes, across 8K acres of town.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 25
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Sep 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~113
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 8K 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 Seeley Lake's average, not your lot's — a low corner or a tree line moves it. Against Seeley Lake's 113-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Seeley Lake
Each reading below is measured for Seeley Lake itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSeeley Lake runs about 113 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
MeasuredSeeley Lake 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 Seeley Lake is in
Seeley Lake sits in the Middle Rockies — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Seeley Lake's own centroid rather than borrowed from Missoula County.
What Grows in Seeley Lake
Every plant below cleared Seeley Lake's own zone 4a and its 113-day season. Each card opens that plant's Montana profile. How we score.
Is it too late to plant in Seeley Lake?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Apr 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 25 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 15 — 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 Seeley Lake
Closest first, within ~10 miles of Seeley Lake. Listing isn't leaking, and distance isn't exposure.
- MISSOULA CO PUBLIC SCHOOLS SEELEY LAKEBrownfields · 2400 ft
- SEELEY LAKE ELEM SCHOOL DIST 34Underground Storage Tanks · 0.9 mi
- PYRAMID MOUNTAIN LUMBER INC.Brownfields · 1.0 mi
- PYRAMID MOUNTAIN LUMBER INC USTUnderground Storage Tanks · 1.0 mi
- GAS HAUSUnderground Storage Tanks · 1.2 mi
- ROVEROSUnderground Storage Tanks · 1.2 mi
- 16N15W11DCCD01Nitrate · 1.4 mi
- JACKMAN BRINK & MALLORYUnderground Storage Tanks · 1.6 mi
- MDOT CLEARWATER SITEUnderground Storage Tanks · 1.7 mi
- LEISURE LODGE INCUnderground Storage Tanks · 3.6 mi
- Susan MineMining · 3.8 mi
- RAY BARTLETT TRUCKINGBrownfields · 4.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Seeley Lake'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 Seeley Lake.
Sources Checked
within ~10 miles of Seeley Lake
Severity Distribution
within ~10 miles of Seeley Lake
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 Seeley Lake
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 Seeley Lake average
Your land is one point inside Seeley Lake
Everything above resolves to Seeley Lake as a whole — one PHZM band and one 28°F frost record, read across 8K 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 Seeley Lake Average
Seeley Lake Average
- ●USDA Zones 4a, averaged across Seeley Lake
- ●One soil character for all of Seeley Lake
- ●Frost dates read at Seeley Lake's scale: May 25 to Sep 15
YOUR Parcel
- ✓Your exact zone, not Seeley Lake's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Seeley Lake
Pull a site-specific report for your exact address in Seeley Lake, Montana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Seeley Lake averages can't show:
We read public map data around Seeley Lake — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Seeley Lake average
How we know this about Seeley Lake
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 Seeley Lake’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 Seeley Lake
When does frost risk typically end in Seeley Lake?
The last hard freeze (28°F) in Seeley Lake typically lands around May 25, 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 15.
When is the first frost in Seeley Lake?
The first hard freeze (28°F) in Seeley Lake typically arrives around Sep 15, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 1, so the watching starts about Aug 16 — about 113 days after the spring freeze cleared.
How long is the growing season in Seeley Lake?
Measured between 28°F hard freezes, Seeley Lake sees about 113 frost-free days — roughly May 25 through Sep 15, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 15 to Sep 1, about 78 days.
Is the soil safe to grow vegetables in Seeley Lake?
The federal record around Seeley Lake is light — 22 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (14), the nearest Brownfields record about 0.5 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 gardeners stretch the season in Seeley Lake?
With about 113 frost-free days between hard freezes, Seeley Lake 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 141 to 169 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 25 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Seeley Lake's scale — its 4a band and its 113-day season. Your yard writes its own version of Seeley Lake'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 Seeley Lake’s own scale
6 of the readings below were taken at Seeley Lake's own scale — its own ~113-day season between 28°F freezes, the 7,846 acres it covers and 22 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Seeley Lake's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Seeley Lake's own 28°F hard-freeze dates, about May 25 and Sep 15 and the ~113-day span between themNOAA 1991–2020 Climate Normals
- 22 documented contamination sites on the federal record near Seeley Lake, the closest Brownfields record about 0.5 miles out from the town centreFederal environmental registers
- Seeley Lake's boundary and the 7,846 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~113-day seasonGrowable Ground crop-matching engine
- The ecoregion at Seeley Lake's own centroid, the Middle RockiesUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Seeley Lake's 7,846 acres read through its county's SSURGO summaryfrom Missoula County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Missoula 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 Missoula County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Seeley Lake's 7,846 acreswhy one lot differs from the next →
- Which side of Seeley Lake you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 7,846 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.5 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 Seeley Lake-wide figureread your own land →
More in Montana
Growing region
Nearby growing guides