Geary County, in Kansas, sits in USDA hardiness zone 6b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Crops well matched to these conditions include cabbage, hazelnut, lavender, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Geary County lies within the Flint Hills — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Geary County holds more than one microclimate.
Soils and elevations shift across Geary 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 Geary County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Geary County — the short answer
Geary County, Kansas: USDA zone 6b, about 210 days between hard freezes, across 246K acres.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 3
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Oct 30
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~210
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 246K 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 6b is Geary County's average, not your lot's — a low corner or a tree line moves it. Against Geary County's 210-day season, see what your own ground reads.
Heat in Geary County
Across a year, Geary County accumulates about 3,882 growing degree days above 50°F, about 49 more than the middle Kansas county — ahead of 60 of Kansas’s 105 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 Geary County
Across Geary County, the ground is predominantly Mollisols, where Clime, Irwin, and Crete are the most extensive named soil series. The soil is generally well drained with a silty clay loam surface. Topsoil pH runs about 6.1–7.5, neutral. Rainfall drains through hydrologic group D soils.
Soil order
Mollisols
Drainage
Well drained
Prime farmland
52%
Hydric soils
0%
Soil still varies lot by lot — soil types explained.
How the ground varies across Geary County
The USDA soil survey maps 65% of Geary County as well drained — but another 30% drains differently: 27% moderately well drained, 2% somewhat poorly drained.
Clime is the most extensive named soil at 18% of mapped acres, then Irwin (15%) and Crete (10%).
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 Geary County
Each reading below is measured for Geary 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 Geary County are well drained, in hydrologic group D — 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 Geary County runs about pH 6.1–7.5, 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
MeasuredGeary County runs about 210 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredGeary County sits in USDA hardiness zone 6b.
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 Geary County is in
Geary County sits in the Flint Hills — EPA Level III, inside the wider Great Plains. One consistent ecological setting across the whole county.
What Grows in Geary County
We scored all 1,086 plants against Geary County's own USDA zone 6b and its own 210-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 Kansas profile.
Is it too late to plant in Geary County?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 30 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Geary County
- monarch butterfly107 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Geary County
USGS estimates 45,270 lb of Glyphosate on Geary County farmland in 2019, its largest by weight, ahead of Metolachlor & Metolachlor-s (32,047 lb) and Metolachlor-s (26,608 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 Geary County — and how to grow with it.
We checked the federal record across Geary County — 233 documented sites across 6 of the 9 source types we track.
The most significant on record: 7 Toxics Release Inventory facilities. Active industrial facilities reporting chemical releases to air, water, and land.
There's a meaningful federal record across Geary County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Geary County
Closest first, across Geary County. Listing isn't leaking, and distance isn't exposure.
- KONZA CONST CO INCBrownfields · 1.3 mi
- CFNB-GRANDVIEW PLAZAUnderground Storage Tanks · 2.4 mi
- HANDY'S LLC - DBA HANDY'S #1Underground Storage Tanks · 2.4 mi
- 12S 06E 18CBA 01Nitrate · 2.5 mi
- 12S 06E 18BCA 01Nitrate · 2.5 mi
- 12S 05E 07CCD 01Nitrate · 2.5 mi
- 12S 06E 05DAA 01Nitrate · 2.6 mi
- 12S 06E 07CDB 01Nitrate · 2.6 mi
- 12S 06E 07CCC 01Nitrate · 2.7 mi
- 12S 06E 07CCC 02Nitrate · 2.7 mi
- JUNCTION CITY, CITY OFPFAS · 2.7 mi
- 12S 05E 12DDD 01Nitrate · 2.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Geary 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 Geary County.
Total Sites
233
across Geary County
Risk Level
Elevated
Highest-severity
7 Toxics Release Inventory facilities
Sources Checked
across Geary County
Severity Distribution
across Geary County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Geary County, Nitrate runs higher than the national average — 80 sites across Geary County. That's not a problem with your land — it's information about it.
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 Geary 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 Geary County average
Your land is one point inside Geary County
Everything above resolves to Geary County as a whole — one PHZM band and one county frost record, read across 246K 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 Geary County Average
Geary County Average
- ●USDA Zones 6b, averaged across Geary County
- ●One soil character for all of Geary County
- ●Frost dates read at Geary County's scale: Apr 3 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Geary County's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Geary County
Pull a site-specific report for your exact address in Geary County, Kansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Geary County averages can't show:
We read public map data around Geary County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Geary County average
How we know this about Geary 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 Geary County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Geary County
When does frost risk typically end in Geary County?
The last hard freeze (28°F) in Geary County typically lands around Apr 3, 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 Apr 24.
How long is the growing season in Geary County?
Measured between 28°F hard freezes, Geary County sees about 210 frost-free days — roughly Apr 3 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 24 to Oct 16, about 175 days.
Is the soil safe to grow vegetables in Geary County?
The federal record around Geary County is a meaningful one — 233 documented sites, mostly Underground Storage Tanks entries (86), the nearest Brownfields record about 1.3 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.
Everything above is measured at Geary County's scale — its 6b band and its 210-day season. Your yard writes its own version of Geary 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 Kansas's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Geary County’s own scale
9 of the readings below were taken at Geary County's own scale — its own ~210-day span between 28°F freezes, the 3 most extensive soil series mapped here and 233 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Geary County's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Geary County's own 28°F hard-freeze dates and its ~210-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Geary CountyUSDA NRCS SSURGO
- 233 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Brownfields record about 1.3 miles outFederal environmental registers
- Geary County's boundary and the 246,177 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~210-day seasonGrowable Ground crop-matching engine
- Geary County sitting wholly inside the Flint HillsUS EPA Level III Ecoregions
- Open occurrence records documented in Geary County for a tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Geary County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Kansas grower plans around — written at state scale, so they stay on the state guidefrom Kansas
What this page can’t tell you
- How the season shifts across Geary County — the ~210 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 Geary County's 246,177 acreswhy one lot differs from the next →
- Which of those 233 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 Geary Countyread your own land →