Silver Gate, Montana, sits in USDA hardiness zone 4b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Crops well matched to these conditions include zucchini, cranberry, cilantro, and pumpkin — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Silver Gate, 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 Silver Gate 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 Silver Gate — soil, climate, flood, and parcel records. How we handle your address.
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Silver Gate — the short answer
Silver Gate, Montana: USDA zone 4b, about 90 days between hard freezes, across 3K acres of town.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jun 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Sep 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~90
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 3K 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 Silver Gate's average, not your lot's — a low corner or a tree line moves it. Against Silver Gate's 90-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Silver Gate
Each reading below is measured for Silver Gate itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSilver Gate runs about 90 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
MeasuredSilver Gate 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 Silver Gate is in
Silver Gate sits in the Middle Rockies — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Silver Gate's own centroid rather than borrowed from Park County.
What Grows in Silver Gate
Every plant below cleared Silver Gate's own zone 4b and its 90-day season. Each card opens that plant's Montana profile. How we score.
Is it too late to plant in Silver Gate?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around May 15; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jun 12 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 10 — long-season crops need about 90 days of runway, quick greens only 30. Even here the calendar’s edges hold value: thirty-day greens late in the window, then garlic and a rested bed for spring.
What's on the federal record near Silver Gate
Closest first, within ~10 miles of Silver Gate. Listing isn't leaking, and distance isn't exposure.
- HIGHTOWER PROPERTYUnderground Storage Tanks · 0.9 mi
- KARL MICKUSUnderground Storage Tanks · 1.0 mi
- Grace LodeMining · 1.5 mi
- Silver Zone LodeMining · 1.5 mi
- Stump MineMining · 1.5 mi
- Early DayMining · 1.7 mi
- Big Blue MineMining · 1.7 mi
- Shoo FlyMining · 1.8 mi
- Duke MineMining · 1.9 mi
- Morning StarMining · 1.9 mi
- New World ProjectMining · 1.9 mi
- TOP OF THE WORLD GUIDE SERVICEUnderground Storage Tanks · 2.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Silver Gate'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 Silver Gate.
Total Sites
70
within ~10 miles of Silver Gate
Risk Level
High
Highest-severity
1 Superfund site (none NPL-listed)
Severity Distribution
within ~10 miles of Silver Gate
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Silver Gate, Mining runs higher than the national average — 56 sites within ~10 miles of Silver Gate. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Silver Gate
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 Silver Gate average
Your land is one point inside Silver Gate
Everything above resolves to Silver Gate as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Silver Gate Average
Silver Gate Average
- ●USDA Zones 4b, averaged across Silver Gate
- ●One soil character for all of Silver Gate
- ●Frost dates read at Silver Gate's scale: Jun 12 to Sep 10
YOUR Parcel
- ✓Your exact zone, not Silver Gate's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Silver Gate
Pull a site-specific report for your exact address in Silver Gate, Montana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Silver Gate averages can't show:
We read public map data around Silver Gate — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Silver Gate average
How we know this about Silver Gate
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 Silver Gate’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 Silver Gate
When does frost risk typically end in Silver Gate?
The last hard freeze (28°F) in Silver Gate typically lands around Jun 12, 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 Jul 3.
When is the first frost in Silver Gate?
The first hard freeze (28°F) in Silver Gate typically arrives around Sep 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Aug 27, so the watching starts about Aug 11 — about 90 days after the spring freeze cleared.
How long is the growing season in Silver Gate?
Measured between 28°F hard freezes, Silver Gate sees about 90 frost-free days — roughly Jun 12 through Sep 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jul 3 to Aug 27, about 55 days.
Is the soil safe to grow vegetables in Silver Gate?
The federal record around Silver Gate runs heavier than most — 70 documented sites, mostly Mining entries (56), the nearest Underground Storage Tanks record about 0.9 miles 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 Silver Gate?
With about 90 frost-free days between hard freezes, Silver Gate 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 118 to 146 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the Jun 12 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Silver Gate's scale — its 4b band and its 90-day season. Your yard writes its own version of Silver Gate'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 Silver Gate’s own scale
6 of the readings below were taken at Silver Gate's own scale — its own ~90-day season between 28°F freezes, the 2,792 acres it covers and 70 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Silver Gate's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Silver Gate's own 28°F hard-freeze dates, about Jun 12 and Sep 10 and the ~90-day span between themNOAA 1991–2020 Climate Normals
- 70 documented contamination sites on the federal record near Silver Gate, the closest Underground Storage Tanks record about 0.9 miles out from the town centreFederal environmental registers
- Silver Gate's boundary and the 2,792 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~90-day seasonGrowable Ground crop-matching engine
- The ecoregion at Silver Gate's own centroid, the Middle RockiesUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Silver Gate's 2,792 acres read through its county's SSURGO summaryfrom Park County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Park 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 Park County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Silver Gate's 2,792 acreswhy one lot differs from the next →
- Which side of Silver Gate you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,792 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.9 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 Silver Gate-wide figureread your own land →
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