Homa Hills, Wyoming, sits in USDA hardiness zone 5a — a zone band wide enough that plant choice, not possibility, is the interesting question.
These conditions suit cabbage, cranberry, lavender, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Homa Hills, 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 Homa Hills 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 Homa Hills — soil, climate, flood, and parcel records. How we handle your address.
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Homa Hills — the short answer
Homa Hills, Wyoming: USDA zone 5a, about 150 days between hard freezes, across 6K acres of town.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 7
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~150
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 6K 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 5a is Homa Hills's average, not your lot's — a low corner or a tree line moves it. Against Homa Hills's 150-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Homa Hills
Each reading below is measured for Homa Hills itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHoma Hills runs about 150 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
MeasuredHoma Hills sits in USDA hardiness zone 5a.
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 Homa Hills is in
Homa Hills sits in the Northwestern Great Plains — EPA Level III, inside the wider Great Plains. That is read at Homa Hills's own centroid, and it is not what its county reads: Natrona County is mostly Wyoming Basin. The wider page above you is answering a different question about different ground.
What Grows in Homa Hills
Every plant below cleared Homa Hills's own zone 5a and its 150-day season. Each card opens that plant's Wyoming profile. How we score.
Is it too late to plant in Homa Hills?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Apr 9; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 7 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 4 — 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 Homa Hills
Closest first, within ~10 miles of Homa Hills. Listing isn't leaking, and distance isn't exposure.
- SAFARILAND/DEFENSE TECHNOLOGYToxics Release Inventory · 1.7 mi
- SAFARILAND/DEFENSE TECHNOLOGYBrownfields · 1.7 mi
- Haynes Grocery, Inc..Underground Storage Tanks · 2.4 mi
- AUSTIN POWDER COMPANYToxics Release Inventory · 4.0 mi
- FORTERRA PIPE AND PRECASTBrownfields · 4.1 mi
- FORTERRA BAR NUNN PRECAST YARDToxics Release Inventory · 4.1 mi
- Bob's Production ServiceUnderground Storage Tanks · 4.4 mi
- D and R Trucking, Inc.Underground Storage Tanks · 4.4 mi
- McMurry Brothers CompanyUnderground Storage Tanks · 4.4 mi
- UNICHEM INERNATIONAL INCToxics Release Inventory · 4.6 mi
- BADGER STREET PROPERTYBrownfields · 5.3 mi
- H. HarfordUnderground Storage Tanks · 5.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Homa Hills'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 Homa Hills.
Total Sites
403
within ~10 miles of Homa Hills
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Homa Hills
Severity Distribution
within ~10 miles of Homa Hills
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Homa Hills, Toxics Release Inventory runs higher than the national average — 25 sites within ~10 miles of Homa Hills. That's not a problem with your land — it's information about it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Homa Hills
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 Homa Hills average
Your land is one point inside Homa Hills
Everything above resolves to Homa Hills as a whole — one PHZM band and one 28°F frost record, read across 6K 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 Homa Hills Average
Homa Hills Average
- ●USDA Zones 5a, averaged across Homa Hills
- ●One soil character for all of Homa Hills
- ●Frost dates read at Homa Hills's scale: May 7 to Oct 4
YOUR Parcel
- ✓Your exact zone, not Homa Hills's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Homa Hills
Pull a site-specific report for your exact address in Homa Hills, Wyoming — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Homa Hills averages can't show:
We read public map data around Homa Hills — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Homa Hills average
How we know this about Homa Hills
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 Homa Hills’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 Homa Hills
When does frost risk typically end in Homa Hills?
The last hard freeze (28°F) in Homa Hills typically lands around May 7, 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 28.
When is the first frost in Homa Hills?
The first hard freeze (28°F) in Homa Hills typically arrives around Oct 4, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 20, so the watching starts about Sep 4 — about 150 days after the spring freeze cleared.
How long is the growing season in Homa Hills?
Measured between 28°F hard freezes, Homa Hills sees about 150 frost-free days — roughly May 7 through Oct 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 28 to Sep 20, about 115 days.
Is the soil safe to grow vegetables in Homa Hills?
The federal record around Homa Hills is a meaningful one — 403 documented sites, mostly Underground Storage Tanks entries (198), the nearest Toxics Release Inventory record about 1.7 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 Homa Hills?
From about Sep 4 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 4 (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 4. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Homa Hills's scale — its 5a band and its 150-day season. Your yard writes its own version of Homa Hills'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 Homa Hills’s own scale
6 of the readings below were taken at Homa Hills's own scale — its own ~150-day season between 28°F freezes, the 5,836 acres it covers and 403 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Homa Hills's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Homa Hills's own 28°F hard-freeze dates, about May 7 and Oct 4 and the ~150-day span between themNOAA 1991–2020 Climate Normals
- 403 documented contamination sites on the federal record near Homa Hills, the closest Toxics Release Inventory record about 1.7 miles out from the town centreFederal environmental registers
- Homa Hills's boundary and the 5,836 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~150-day seasonGrowable Ground crop-matching engine
- Homa Hills sits in the Northwestern Great Plains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Homa Hills's 5,836 acres read through its county's SSURGO summaryfrom Natrona County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Natrona 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 Natrona County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Homa Hills's 5,836 acreswhy one lot differs from the next →
- Which side of Homa Hills you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 5,836 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Toxics Release Inventory record about 1.7 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 Homa Hills-wide figureread your own land →
More in Wyoming
Wider growing context
What grows across WyomingHoma Hills sits outside our named growing regions, so Wyoming as a whole is its closest context here.
Nearby growing guides