Marbleton, Wyoming, sits in USDA hardiness zone 4a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Crops well matched to these conditions include zucchini, cranberry, cilantro, and okra — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Marbleton, 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 Marbleton 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 Marbleton — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Marbleton — the short answer
Marbleton, Wyoming: USDA zone 4a, about 97 days between hard freezes, across 580 acres of town.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jun 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Sep 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~97
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 580 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 4a is Marbleton's average, not your lot's — a low corner or a tree line moves it. Against Marbleton's 97-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Marbleton
Each reading below is measured for Marbleton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMarbleton runs about 97 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
MeasuredMarbleton sits in USDA hardiness zone 4a.
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 Marbleton is in
Marbleton sits in the Wyoming Basin — EPA Level III, inside the wider North American Deserts. That is read at Marbleton's own centroid rather than borrowed from Sublette County.
What Grows in Marbleton
Every plant below cleared Marbleton's own zone 4a and its 97-day season. Each card opens that plant's Wyoming profile. How we score.
Is it too late to plant in Marbleton?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around May 7; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jun 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 9 — long-season crops need about 90 days of runway, quick greens only 30. In a season this compact, fast finishers and cold-hardy greens do the late work, and garlic tucked in before the freeze repays you next summer.
What's on the federal record near Marbleton
Closest first, within ~10 miles of Marbleton. Listing isn't leaking, and distance isn't exposure.
- Bray Trucking, Inc.Underground Storage Tanks · 500 ft
- Hageman Anchor and Testing ServiceUnderground Storage Tanks · 1500 ft
- Persh's Water ServiceUnderground Storage Tanks · 1800 ft
- WALLER'S TRUCKING CO. INC.Brownfields · 1900 ft
- Martin's Welding and Roustabout ServiceUnderground Storage Tanks · 1900 ft
- Skyline Construction Company, Inc.Underground Storage Tanks · 2100 ft
- Sublette County Sch District #9 Bus BarnUnderground Storage Tanks · 0.5 mi
- Loaf 'N Jug #134Underground Storage Tanks · 0.5 mi
- Natural Gas Corporation of CaliforniaUnderground Storage Tanks · 0.6 mi
- WFS Big Piney District YardUnderground Storage Tanks · 0.6 mi
- Obo's Market - MarbletonUnderground Storage Tanks · 0.6 mi
- MIKE'S OILFIELD SERVICEBrownfields · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Marbleton'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 Marbleton.
Total Sites
70
within ~10 miles of Marbleton
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Marbleton
Severity Distribution
within ~10 miles of Marbleton
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Marbleton, Nitrate runs higher than the national average — 34 sites within ~10 miles of Marbleton. 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 Marbleton
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 Marbleton average
Your land is one point inside Marbleton
Everything above resolves to Marbleton as a whole — one PHZM band and one 28°F frost record, read across 580 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 Marbleton Average
Marbleton Average
- ●USDA Zones 4a, averaged across Marbleton
- ●One soil character for all of Marbleton
- ●Frost dates read at Marbleton's scale: Jun 4 to Sep 9
YOUR Parcel
- ✓Your exact zone, not Marbleton's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Marbleton
Pull a site-specific report for your exact address in Marbleton, Wyoming — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Marbleton averages can't show:
We read public map data around Marbleton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Marbleton average
How we know this about Marbleton
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 Marbleton’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 Marbleton
When does frost risk typically end in Marbleton?
The last hard freeze (28°F) in Marbleton typically lands around Jun 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 Jun 25.
When is the first frost in Marbleton?
The first hard freeze (28°F) in Marbleton typically arrives around Sep 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Aug 26, so the watching starts about Aug 10 — about 97 days after the spring freeze cleared.
How long is the growing season in Marbleton?
Measured between 28°F hard freezes, Marbleton sees about 97 frost-free days — roughly Jun 4 through Sep 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 25 to Aug 26, about 62 days.
Is the soil safe to grow vegetables in Marbleton?
The federal record around Marbleton shows 70 documented sites, mostly Nitrate entries (34), the nearest Underground Storage Tanks record under a tenth of a mile out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do gardeners stretch the season in Marbleton?
With about 97 frost-free days between hard freezes, Marbleton 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 125 to 153 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the Jun 4 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Marbleton's scale — its 4a band and its 97-day season. Your yard writes its own version of Marbleton'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 Marbleton’s own scale
6 of the readings below were taken at Marbleton's own scale — its own ~97-day season between 28°F freezes, the 580 acres it covers and 70 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Marbleton's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Marbleton's own 28°F hard-freeze dates, about Jun 4 and Sep 9 and the ~97-day span between themNOAA 1991–2020 Climate Normals
- 70 documented contamination sites on the federal record near Marbleton, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Marbleton's boundary and the 580 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~97-day seasonGrowable Ground crop-matching engine
- The ecoregion at Marbleton's own centroid, the Wyoming BasinUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Marbleton's 580 acres read through its county's SSURGO summaryfrom Sublette County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Sublette 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 Sublette County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Marbleton's 580 acreswhy one lot differs from the next →
- Which side of Marbleton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 580 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 Marbleton-wide figureread your own land →
More in Wyoming
Wider growing context
What grows across WyomingMarbleton sits outside our named growing regions, so Wyoming as a whole is its closest context here.