Shoshoni, Wyoming, sits in USDA hardiness zone 4b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Growers here do well with cabbage, cranberry, turkish rocket, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Shoshoni, 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 Shoshoni 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 Shoshoni — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Shoshoni — the short answer
Shoshoni, Wyoming: USDA zone 4b, about 171 days between hard freezes, across 3K acres of town.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 24
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~171
- 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 Shoshoni's average, not your lot's — a low corner or a tree line moves it. Against Shoshoni's 171-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Shoshoni
Each reading below is measured for Shoshoni itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredShoshoni runs about 171 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
MeasuredShoshoni 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 Shoshoni is in
Shoshoni sits in the Wyoming Basin — EPA Level III, inside the wider North American Deserts. That is read at Shoshoni's own centroid rather than borrowed from Fremont County.
What Grows in Shoshoni
Every plant below cleared Shoshoni's own zone 4b and its 171-day season. Each card opens that plant's Wyoming profile. How we score.
Is it too late to plant in Shoshoni?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 24 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 12 — 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 Shoshoni
Closest first, within ~10 miles of Shoshoni. Listing isn't leaking, and distance isn't exposure.
- KINDER MORGAN INC. SHOSHONIBrownfields · 300 ft
- Shoshoni HeadquartersUnderground Storage Tanks · 300 ft
- SHOSHONI FIELD OFFICEBrownfields · 450 ft
- WY Department of TransportationUnderground Storage Tanks · 1100 ft
- WYOMING HIGHWAY DEPARTMENTBrownfields · 1100 ft
- Fremont County School District #24 - ShoshoniUnderground Storage Tanks · 1200 ft
- Fast Lane, Inc.Underground Storage Tanks · 1400 ft
- Moneta Field CompressorUnderground Storage Tanks · 1400 ft
- Fuller ReservoirUnderground Storage Tanks · 1400 ft
- Trail Town SupplyUnderground Storage Tanks · 1500 ft
- Shoshoni GarageUnderground Storage Tanks · 1500 ft
- Country CornerUnderground Storage Tanks · 1500 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Shoshoni'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 Shoshoni.
Sources Checked
within ~10 miles of Shoshoni
Severity Distribution
within ~10 miles of Shoshoni
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Shoshoni, Nitrate runs higher than the national average — 20 sites within ~10 miles of Shoshoni. 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.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Shoshoni
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 Shoshoni average
Your land is one point inside Shoshoni
Everything above resolves to Shoshoni 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 Shoshoni Average
Shoshoni Average
- ●USDA Zones 4b, averaged across Shoshoni
- ●One soil character for all of Shoshoni
- ●Frost dates read at Shoshoni's scale: Apr 24 to Oct 12
YOUR Parcel
- ✓Your exact zone, not Shoshoni's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Shoshoni
Pull a site-specific report for your exact address in Shoshoni, Wyoming — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Shoshoni averages can't show:
We read public map data around Shoshoni — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Shoshoni average
How we know this about Shoshoni
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 Shoshoni’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 Shoshoni
When does frost risk typically end in Shoshoni?
The last hard freeze (28°F) in Shoshoni typically lands around Apr 24, 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 15.
When is the first frost in Shoshoni?
The first hard freeze (28°F) in Shoshoni typically arrives around Oct 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 28, so the watching starts about Sep 12 — about 171 days after the spring freeze cleared.
How long is the growing season in Shoshoni?
Measured between 28°F hard freezes, Shoshoni sees about 171 frost-free days — roughly Apr 24 through Oct 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 15 to Sep 28, about 136 days.
Is the soil safe to grow vegetables in Shoshoni?
The federal record around Shoshoni is light — 44 documented sites across the 9 federal source types we checked, mostly Nitrate entries (20), the nearest Brownfields record under a tenth of a mile 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 Shoshoni?
From about Sep 12 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 12 (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 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Shoshoni's scale — its 4b band and its 171-day season. Your yard writes its own version of Shoshoni'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 Shoshoni’s own scale
6 of the readings below were taken at Shoshoni's own scale — its own ~171-day season between 28°F freezes, the 2,790 acres it covers and 44 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Shoshoni's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Shoshoni's own 28°F hard-freeze dates, about Apr 24 and Oct 12 and the ~171-day span between themNOAA 1991–2020 Climate Normals
- 44 documented contamination sites on the federal record near Shoshoni, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Shoshoni's boundary and the 2,790 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~171-day seasonGrowable Ground crop-matching engine
- The ecoregion at Shoshoni's own centroid, the Wyoming BasinUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Shoshoni's 2,790 acres read through its county's SSURGO summaryfrom Fremont County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Fremont County
- The growing challenges every Wyoming grower plans around — written at state scale, so they stay on the state guidefrom Wyoming
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Fremont County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Shoshoni's 2,790 acreswhy one lot differs from the next →
- Which side of Shoshoni you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,790 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Shoshoni-wide figureread your own land →