Cheyenne, Wyoming, sits in USDA hardiness zone 5b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Among the crops suited to this profile: cabbage, cranberry, lavender, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Cheyenne, 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 Cheyenne 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 Cheyenne — soil, climate, flood, and parcel records. How we handle your address.
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Cheyenne — the short answer
Cheyenne, Wyoming: USDA zone 5b, about 158 days between hard freezes, across 23K acres of city.
- USDA zone
- 5b
- 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 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~158
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 23K 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 5b is Cheyenne's average, not your lot's — a low corner or a tree line moves it. Against Cheyenne's 158-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Cheyenne
Each reading below is measured for Cheyenne itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCheyenne runs about 158 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
MeasuredCheyenne sits in USDA hardiness zone 5b.
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 Cheyenne is in
Cheyenne sits in the High Plains — EPA Level III, inside the wider Great Plains. That is read at Cheyenne's own centroid rather than borrowed from Laramie County.
What Grows in Cheyenne
Every plant below cleared Cheyenne's own zone 5b and its 158-day season. Each card opens that plant's Wyoming profile. How we score.
Is it too late to plant in Cheyenne?
Almost never — the real question is what to plant next. 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 9 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
What's on the federal record near Cheyenne
Closest first, within ~10 miles of Cheyenne. Listing isn't leaking, and distance isn't exposure.
- CHEYENNE RENEWABLE DIESEL COMPANYBrownfields · 600 ft
- CHEYENNE RENEWABLE DIESEL COMPANYToxics Release Inventory · 600 ft
- 13-066-05aac01Nitrate · 850 ft
- W. G. Dale Electric CompanyUnderground Storage Tanks · 1600 ft
- CHEYENNE TRANSMISSIONBrownfields · 1900 ft
- Stage StopUnderground Storage Tanks · 2000 ft
- National Weather ServiceUnderground Storage Tanks · 2200 ft
- SCHROLL CABINETSToxics Release Inventory · 2300 ft
- Theo A. CheeverUnderground Storage Tanks · 2500 ft
- RUBENS METALSBrownfields · 2600 ft
- Gas N GrubUnderground Storage Tanks · 0.5 mi
- ROCKY MOUNTAIN AUTOMOTIVEBrownfields · 0.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Cheyenne'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 Cheyenne.
Sources Checked
within ~10 miles of Cheyenne
Severity Distribution
within ~10 miles of Cheyenne
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Cheyenne
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 Cheyenne average
Your land is one point inside Cheyenne
Everything above resolves to Cheyenne as a whole — one PHZM band and one 28°F frost record, read across 23K 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 city 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 Cheyenne Average
Cheyenne Average
- ●USDA Zones 5b, averaged across Cheyenne
- ●One soil character for all of Cheyenne
- ●Frost dates read at Cheyenne's scale: May 4 to Oct 9
YOUR Parcel
- ✓Your exact zone, not Cheyenne's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Cheyenne
Pull a site-specific report for your exact address in Cheyenne, Wyoming — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Cheyenne averages can't show:
We read public map data around Cheyenne — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Cheyenne average
How we know this about Cheyenne
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Cheyenne’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 city grain anywhere on this page — there is no city-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 Cheyenne
When does frost risk typically end in Cheyenne?
The last hard freeze (28°F) in Cheyenne 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 Cheyenne?
The first hard freeze (28°F) in Cheyenne typically arrives around Oct 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 25, so the watching starts about Sep 9 — about 158 days after the spring freeze cleared.
How long is the growing season in Cheyenne?
Measured between 28°F hard freezes, Cheyenne sees about 158 frost-free days — roughly May 4 through Oct 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 25 to Sep 25, about 123 days.
Is the soil safe to grow vegetables in Cheyenne?
The federal record around Cheyenne is a meaningful one — 560 documented sites, mostly Underground Storage Tanks entries (294), the nearest Brownfields record about 0.1 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Cheyenne?
From about Sep 9 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 9 (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 9. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Cheyenne's scale — its 5b band and its 158-day season. Your yard writes its own version of Cheyenne'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 Cheyenne’s own scale
6 of the readings below were taken at Cheyenne's own scale — its own ~158-day season between 28°F freezes, the 23,343 acres it covers and 560 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Cheyenne's own USDA hardiness band, zones 5bUSDA PHZM 2023
- Cheyenne's own 28°F hard-freeze dates, about May 4 and Oct 9 and the ~158-day span between themNOAA 1991–2020 Climate Normals
- 560 documented contamination sites on the federal record near Cheyenne, the closest Brownfields record about 0.1 miles out from the town centreFederal environmental registers
- Cheyenne's boundary and the 23,343 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~158-day seasonGrowable Ground crop-matching engine
- The ecoregion at Cheyenne's own centroid, the High PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Cheyenne's 23,343 acres read through its county's SSURGO summaryfrom Laramie County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Laramie 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 Laramie County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Cheyenne's 23,343 acreswhy one lot differs from the next →
- Which side of Cheyenne you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 23,343 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.1 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 Cheyenne-wide figureread your own land →
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