Keya Paha County, in Nebraska, sits in USDA hardiness zone 5a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
A short list that earns its place here — cabbage, cranberry, lavender, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Keya Paha County holds more than one microclimate.
Soils and elevations shift across Keya Paha County, so your frost dates and drainage aren't the county average. 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 Keya Paha County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Keya Paha County — the short answer
Keya Paha County, Nebraska: USDA zone 5a, about 173 days between hard freezes, across 495K acres.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 25
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Oct 15
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~173
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 495K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 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 Keya Paha County's average, not your lot's — a low corner or a tree line moves it. Against Keya Paha County's 173-day season, see what your own ground reads.
Heat in Keya Paha County
Across a year, Keya Paha County accumulates about 2,667 growing degree days above 50°F, about 173 fewer than the middle Nebraska county — ahead of 28 of Nebraska’s 93 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Keya Paha County
Across Keya Paha County, the ground is predominantly Entisols, where Valentine, Longpine, and Ronson are the most extensive named soil series. The soil is generally well drained with a loamy fine sand surface. Topsoil pH runs about 6.5–7.3, neutral. Rainfall drains through hydrologic group A soils.
Soil order
Entisols
Drainage
Well drained
Prime farmland
0%
Hydric soils
4%
Soil still varies lot by lot — soil types explained.
How the ground varies across Keya Paha County
The USDA soil survey maps 52% of Keya Paha County as well drained — but another 47% drains differently: 27% excessively drained, 6% somewhat excessively drained.
Valentine is the most extensive named soil at 22% of mapped acres, then Longpine (8%) and Ronson (8%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Keya Paha County
Each reading below is measured for Keya Paha County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Keya Paha County are well drained, in hydrologic group A — ground that drains quickly.
The upside is soil you can work early in spring and roots that never drown; the cost is that fast-draining ground dries out fast and leaches nutrients away before plants can use them.
Work in compost and mulch to hold moisture and feed, and water more often in short doses than deep and rarely.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Keya Paha County runs about pH 6.5–7.3, close to neutral.
This is the range most vegetables prefer — one correction you probably do not have to make, which is genuinely good news for a new bed.
Keep it there with compost rather than lime or sulfur, and only amend if your own soil test says otherwise.
USDA NRCS SSURGO
Season length
MeasuredKeya Paha County runs about 173 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
MeasuredKeya Paha County 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 Keya Paha County is in
Keya Paha County spans 2 EPA Level III ecoregions — Northwestern Great Plains (91%) and Northwestern Glaciated Plains (9%). Which one your land falls in changes what grows wild there and how the ground behaves, and a county-wide answer cannot tell you which.
What Grows in Keya Paha County
We scored all 1,086 plants against Keya Paha County's own USDA zone 5a and its own 173-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's Nebraska profile.
Is it too late to plant in Keya Paha County?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 28; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 25 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 15 — long-season crops need about 90 days of runway, quick greens only 30. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
What gets applied to farmland in Keya Paha County
USGS estimates 28,025 lb of Glyphosate on Keya Paha County farmland in 2019, its largest by weight, ahead of Acetochlor (12,199 lb) and Atrazine (7,034 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Keya Paha County — and how to grow with it.
We checked the federal record across Keya Paha County — 21 documented sites across 3 of the 9 source types we track.
The most significant on record: 1 concentrated animal feeding operation. Large-scale animal operations that can contaminate soil and groundwater with nitrates and pathogens.
The federal record across Keya Paha County is light. Growing food here starts from a strong position — a quick pass over the map tells you whether any recorded site sits near your land, and if one does, that's information to plant with, not a reason to stop.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Keya Paha County
Closest first, across Keya Paha County. Listing isn't leaking, and distance isn't exposure.
- RED ARROW SERVICEUnderground Storage Tanks · 1.6 mi
- 33N 21W10AB 1Nitrate · 3.3 mi
- 33N 21W10DC 1Nitrate · 3.7 mi
- TURBINE MARTUnderground Storage Tanks · 3.8 mi
- 33N 20W19DCDD1 SPRINGVIEWNitrate · 4.5 mi
- 33N 21W 9CD 2Nitrate · 4.8 mi
- 33N 21W 9CD 3Nitrate · 4.8 mi
- 33N 21W 9CD 1Nitrate · 4.8 mi
- 33N 21W 8DA 1Nitrate · 5.1 mi
- 33N 21W 7AD 1Nitrate · 5.9 mi
- 35N 23W23BB 1Nitrate · 16.5 mi
- SHEPPERD FEEDING COMPANY, INC.CAFO · 19.3 mi
Measured from Keya Paha County'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 Keya Paha County.
Total Sites
21
across Keya Paha County
Risk Level
Low
Highest-severity
1 concentrated animal feeding operation
Sources Checked
across Keya Paha County
Severity Distribution
across Keya Paha County
Highest-Severity Sites
Know Before You Grow
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Large animal operations push nitrates and bacteria downstream. Below one, test your water.
Check your specific parcel in Keya Paha County
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 Keya Paha County average
Your land is one point inside Keya Paha County
Everything above resolves to Keya Paha County as a whole — one PHZM band and one county frost record, read across 495K 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 county 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 county average.
Your Lot vs the Keya Paha County Average
Keya Paha County Average
- ●USDA Zones 5a, averaged across Keya Paha County
- ●One soil character for all of Keya Paha County
- ●Frost dates read at Keya Paha County's scale: Apr 25 to Oct 15
YOUR Parcel
- ✓Your exact zone, not Keya Paha County's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Keya Paha County
Pull a site-specific report for your exact address in Keya Paha County, Nebraska — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Keya Paha County averages can't show:
We read public map data around Keya Paha County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Keya Paha County average
How we know this about Keya Paha County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Keya Paha County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Keya Paha County
When does frost risk typically end in Keya Paha County?
The last hard freeze (28°F) in Keya Paha County typically lands around Apr 25, 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 16.
How long is the growing season in Keya Paha County?
Measured between 28°F hard freezes, Keya Paha County sees about 173 frost-free days — roughly Apr 25 through Oct 15, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 16 to Oct 1, about 138 days.
Is the soil safe to grow vegetables in Keya Paha County?
The federal record around Keya Paha County is light — 21 documented sites across the 9 federal source types we checked, mostly Nitrate entries (18), the nearest Underground Storage Tanks record about 1.6 miles 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.
Everything above is measured at Keya Paha County's scale — its 5a band and its 173-day season. Your yard writes its own version of Keya Paha County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads Nebraska's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Keya Paha County’s own scale
8 of the readings below were taken at Keya Paha County's own scale — its own ~173-day span between 28°F freezes, the 3 most extensive soil series mapped here and 21 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Keya Paha County's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Keya Paha County's own 28°F hard-freeze dates and its ~173-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Keya Paha CountyUSDA NRCS SSURGO
- 21 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 1.6 miles outFederal environmental registers
- Keya Paha County's boundary and the 494,640 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~173-day seasonGrowable Ground crop-matching engine
- The 2 ecoregions Keya Paha County spans, Northwestern Great Plains the largestUS EPA Level III Ecoregions
- Which agricultural compounds go onto Keya Paha County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Nebraska grower plans around — written at state scale, so they stay on the state guidefrom Nebraska
What this page can’t tell you
- How the season shifts across Keya Paha County — the ~173 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Keya Paha County's 494,640 acreswhy one lot differs from the next →
- Which of those 21 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Keya Paha Countyread your own land →