Stone County, in Arkansas, sits in USDA hardiness zone 7b — a zone band wide enough that plant choice, not possibility, is the interesting question.
These conditions suit cabbage, prickly pear, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Stone County lies within the Ozarks — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Stone County holds more than one microclimate.
Soils and elevations shift across Stone 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 Stone County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Stone County — the short answer
Stone County, Arkansas: USDA zone 7b, about 233 days between hard freezes, across 388K acres.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 22
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 10
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~233
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 388K 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 7b is Stone County's average, not your lot's — a low corner or a tree line moves it. Against Stone County's 233-day season, see what your own ground reads.
Heat and winter chill in Stone County
Across a year, Stone County accumulates about 4,346 growing degree days above 50°F, about 460 fewer than the middle Arkansas county — ahead of 13 of Arkansas’s 75 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.
Winter banks about 2,014 hours below 45°F, 234 more than the Arkansas middle of 1,780. Chill is what tells a fruit tree its dormancy is over, and it is set by climate rather than by anything you can build.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Stone County
Across Stone County, the ground is predominantly Ultisols, where Noark, Linker, and Clarksville are the most extensive named soil series. The soil is generally well drained with a very gravelly silt loam surface. Topsoil pH runs about 4.8–5.6, strongly acidic. Rainfall drains through hydrologic group C soils.
Soil order
Ultisols
Drainage
Well drained
Prime farmland
9%
Hydric soils
0%
Soil still varies lot by lot — soil types explained.
How the ground varies across Stone County
The USDA soil survey maps 82% of Stone County as well drained — but another 19% drains differently: 12% somewhat excessively drained, 5% moderately well drained.
Noark is the most extensive named soil at 15% of mapped acres, then Linker (13%) and Clarksville (11%).
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 Stone County
Each reading below is measured for Stone 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 Stone County are well drained, in hydrologic group C — 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 Stone County runs about pH 4.8–5.6, on the acidic side.
Blueberries, potatoes, and rhododendrons thrive in it, but most vegetables start locking out nutrients below about pH 6.0 and grow pale and stunted no matter how much you feed them.
A measured lime application raises pH for the crops that need it — but test first, because the right rate depends on your own soil, not the county average.
USDA NRCS SSURGO
Season length
MeasuredStone County runs about 233 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
MeasuredStone County sits in USDA hardiness zone 7b.
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 Stone County is in
Stone County spans 2 EPA Level III ecoregions — Ozark Highlands (54%) and Boston Mountains (46%). 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 Stone County
We scored all 1,086 plants against Stone County's own USDA zone 7b and its own 233-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 Arkansas profile.
Is it too late to plant in Stone County?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 22; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 22 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 10 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
Documented around Stone County
- monarch butterfly32 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Stone County
USGS estimates 21,392 lb of Triclopyr on Stone County farmland in 2019, its largest by weight, ahead of 2,4-d (13,629 lb) and Glyphosate (410 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 Stone County — and how to grow with it.
We checked the federal record across Stone County — 59 documented sites across 6 of the 9 source types we track.
The most significant on record: 1 Toxics Release Inventory facility. Active industrial facilities reporting chemical releases to air, water, and land.
The federal record across Stone County is a modest one — a typical footprint for a growing area. Nothing here calls for alarm; it's worth knowing which recorded sites sit closest to where you grow, and each one on the map carries its type and location. If one turns out to be a near neighbor, a one-time soil test settles the question.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Stone County
Closest first, across Stone County. Listing isn't leaking, and distance isn't exposure.
- WEST 66 FOOD MARTUnderground Storage Tanks · 0.8 mi
- HILLTOP MARKETUnderground Storage Tanks · 0.8 mi
- CONESTOGA WOOD SPECIALTIES-MOUNTAIN VIEWBrownfields · 0.9 mi
- CONESTOGA WOOD SPECIALTIES-MOUNTAIN VIEWToxics Release Inventory · 0.9 mi
- EXCEL BOATSBrownfields · 1.0 mi
- MOUNTAIN VIEW SERVICE CENTERUnderground Storage Tanks · 1.3 mi
- HERMAN MOODY'S SELF SERVICE STUnderground Storage Tanks · 1.4 mi
- OZARK FOLK CENTERUnderground Storage Tanks · 1.4 mi
- LEGENDSUnderground Storage Tanks · 1.6 mi
- THOMAS PETRO INC.Underground Storage Tanks · 1.7 mi
- ON THE RUN #30Underground Storage Tanks · 1.8 mi
- HARDEE'S EXXON TRAVEL MARTUnderground Storage Tanks · 1.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Stone 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 Stone County.
Total Sites
59
across Stone County
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
across Stone County
Severity Distribution
across Stone County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Stone County, Underground Storage Tanks runs higher than the national average — 44 sites across Stone County. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Stone 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 Stone County average
Your land is one point inside Stone County
Everything above resolves to Stone County as a whole — one PHZM band and one county frost record, read across 388K 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 Stone County Average
Stone County Average
- ●USDA Zones 7b, averaged across Stone County
- ●One soil character for all of Stone County
- ●Frost dates read at Stone County's scale: Mar 22 to Nov 10
YOUR Parcel
- ✓Your exact zone, not Stone County's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Stone County
Pull a site-specific report for your exact address in Stone County, Arkansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Stone County averages can't show:
We read public map data around Stone County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Stone County average
How we know this about Stone 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 Stone County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Stone County
When does frost risk typically end in Stone County?
The last hard freeze (28°F) in Stone County typically lands around Mar 22, 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 12.
How long is the growing season in Stone County?
Measured between 28°F hard freezes, Stone County sees about 233 frost-free days — roughly Mar 22 through Nov 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 12 to Oct 27, about 198 days.
Is the soil safe to grow vegetables in Stone County?
The federal record around Stone County shows 59 documented sites, mostly Underground Storage Tanks entries (44), the nearest Underground Storage Tanks record about 0.8 miles 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.
Everything above is measured at Stone County's scale — its 7b band and its 233-day season. Your yard writes its own version of Stone 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 Arkansas's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Stone County’s own scale
9 of the readings below were taken at Stone County's own scale — its own ~233-day span between 28°F freezes, the 3 most extensive soil series mapped here and 59 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Stone County's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Stone County's own 28°F hard-freeze dates and its ~233-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Stone CountyUSDA NRCS SSURGO
- 59 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 0.8 miles outFederal environmental registers
- Stone County's boundary and the 388,121 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~233-day seasonGrowable Ground crop-matching engine
- The 2 ecoregions Stone County spans, Ozark Highlands the largestUS EPA Level III Ecoregions
- Open occurrence records documented in Stone County for a tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Stone County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Arkansas grower plans around — written at state scale, so they stay on the state guidefrom Arkansas
What this page can’t tell you
- How the season shifts across Stone County — the ~233 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 Stone County's 388,121 acreswhy one lot differs from the next →
- Which of those 59 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 Stone Countyread your own land →