Edgerton, Wyoming, sits in USDA hardiness zone 5a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Crops well matched to these conditions include cabbage, cranberry, lavender, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Edgerton, 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 Edgerton 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 Edgerton — soil, climate, flood, and parcel records. How we handle your address.
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Edgerton — the short answer
Edgerton, Wyoming: USDA zone 5a, about 148 days between hard freezes, across 191 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 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~148
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 191 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 Edgerton's average, not your lot's — a low corner or a tree line moves it. Against Edgerton's 148-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Edgerton
Each reading below is measured for Edgerton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredEdgerton runs about 148 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
MeasuredEdgerton 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 Edgerton is in
Edgerton sits in the Northwestern Great Plains — EPA Level III, inside the wider Great Plains. That is read at Edgerton'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 Edgerton
Every plant below cleared Edgerton's own zone 5a and its 148-day season. Each card opens that plant's Wyoming profile. How we score.
Is it too late to plant in Edgerton?
Almost never — the real question is what to plant next. 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 2 — 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 Edgerton
Closest first, within ~10 miles of Edgerton. Listing isn't leaking, and distance isn't exposure.
- Natrona County Schools Bus StorageUnderground Storage Tanks · 200 ft
- Town of EdgertonUnderground Storage Tanks · 250 ft
- Teapot Motor Lodge #2Underground Storage Tanks · 650 ft
- Teapot Motor LodgeUnderground Storage Tanks · 750 ft
- Dunbar Well Service, Inc.Underground Storage Tanks · 850 ft
- Big D #19Underground Storage Tanks · 1.2 mi
- ROCKY MOUNTAIN PIPELINE SYSTEMBrownfields · 1.4 mi
- WY Department of TransportationUnderground Storage Tanks · 1.5 mi
- Salt Creek FieldUnderground Storage Tanks · 1.5 mi
- Midwest Relay StationUnderground Storage Tanks · 1.5 mi
- Jim Moore RanchUnderground Storage Tanks · 1.5 mi
- Campbell Oil Field ServiceUnderground Storage Tanks · 1.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Edgerton'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 Edgerton.
Total Sites
21
within ~10 miles of Edgerton
Risk Level
Low
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Edgerton
Severity Distribution
within ~10 miles of Edgerton
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 Edgerton
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 Edgerton average
Your land is one point inside Edgerton
Everything above resolves to Edgerton as a whole — one PHZM band and one 28°F frost record, read across 191 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 Edgerton Average
Edgerton Average
- ●USDA Zones 5a, averaged across Edgerton
- ●One soil character for all of Edgerton
- ●Frost dates read at Edgerton's scale: May 7 to Oct 2
YOUR Parcel
- ✓Your exact zone, not Edgerton's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Edgerton
Pull a site-specific report for your exact address in Edgerton, Wyoming — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Edgerton averages can't show:
We read public map data around Edgerton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Edgerton average
How we know this about Edgerton
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 Edgerton’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 Edgerton
When does frost risk typically end in Edgerton?
The last hard freeze (28°F) in Edgerton 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 Edgerton?
The first hard freeze (28°F) in Edgerton typically arrives around Oct 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 18, so the watching starts about Sep 2 — about 148 days after the spring freeze cleared.
How long is the growing season in Edgerton?
Measured between 28°F hard freezes, Edgerton sees about 148 frost-free days — roughly May 7 through Oct 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 28 to Sep 18, about 113 days.
Is the soil safe to grow vegetables in Edgerton?
The federal record around Edgerton is light — 21 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (15), the nearest Underground Storage Tanks 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 gardeners stretch the season in Edgerton?
With about 148 frost-free days between hard freezes, Edgerton 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 176 to 204 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 7 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Edgerton's scale — its 5a band and its 148-day season. Your yard writes its own version of Edgerton'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 Edgerton’s own scale
6 of the readings below were taken at Edgerton's own scale — its own ~148-day season between 28°F freezes, the 191 acres it covers and 21 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Edgerton's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Edgerton's own 28°F hard-freeze dates, about May 7 and Oct 2 and the ~148-day span between themNOAA 1991–2020 Climate Normals
- 21 documented contamination sites on the federal record near Edgerton, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Edgerton's boundary and the 191 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~148-day seasonGrowable Ground crop-matching engine
- Edgerton 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 Edgerton's 191 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 Edgerton's 191 acreswhy one lot differs from the next →
- Which side of Edgerton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 191 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Edgerton-wide figureread your own land →
More in Wyoming
Wider growing context
What grows across WyomingEdgerton sits outside our named growing regions, so Wyoming as a whole is its closest context here.
Nearby growing guides