Twin Groves, Arkansas, sits in USDA hardiness zone 8a — a zone band wide enough that plant choice, not possibility, is the interesting question.
A short list that earns its place here — cabbage, fig, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Twin Groves, 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 Twin Groves 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 Twin Groves — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Twin Groves — the short answer
Twin Groves, Arkansas: USDA zone 8a, about 256 days between hard freezes, across 3K acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~256
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 3K 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 8a is Twin Groves's average, not your lot's — a low corner or a tree line moves it. Against Twin Groves's 256-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Twin Groves
Each reading below is measured for Twin Groves itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredTwin Groves runs about 256 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
MeasuredTwin Groves sits in USDA hardiness zone 8a.
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 Twin Groves is in
Twin Groves sits in the Arkansas Valley — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Twin Groves's own centroid rather than borrowed from Faulkner County.
What Grows in Twin Groves
Every plant below cleared Twin Groves's own zone 8a and its 256-day season. Each card opens that plant's Arkansas profile. How we score.
Is it too late to plant in Twin Groves?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 9; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 9 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 20 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
What's on the federal record near Twin Groves
Closest first, within ~10 miles of Twin Groves. Listing isn't leaking, and distance isn't exposure.
- D & JUnderground Storage Tanks · 1700 ft
- SOLUTHERN FLUID SOLUTIONS, LLCBrownfields · 0.5 mi
- 08N14W13BAA01Nitrate · 2.0 mi
- SNAPPY'S SOUTHUnderground Storage Tanks · 2.4 mi
- AHTD ROW JOB # R80093Underground Storage Tanks · 2.5 mi
- MAIN STREET MERCANTILEUnderground Storage Tanks · 2.6 mi
- JD'S TIRE & SERVICEUnderground Storage Tanks · 2.7 mi
- FAULKNER COUNTY TRACT 30Underground Storage Tanks · 2.8 mi
- HORNETS CITGOUnderground Storage Tanks · 2.9 mi
- BRADFORD, JUANITAUnderground Storage Tanks · 3.3 mi
- MCMAHAN GROCERYUnderground Storage Tanks · 3.3 mi
- CHAMPION TECHNOLOGIES INCBrownfields · 3.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Twin Groves'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 Twin Groves.
Total Sites
85
within ~10 miles of Twin Groves
Risk Level
Moderate
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Twin Groves
Severity Distribution
within ~10 miles of Twin Groves
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Twin Groves, Nitrate runs higher than the national average — 26 sites within ~10 miles of Twin Groves. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around 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 Twin Groves
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 Twin Groves average
Your land is one point inside Twin Groves
Everything above resolves to Twin Groves as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Twin Groves Average
Twin Groves Average
- ●USDA Zones 8a, averaged across Twin Groves
- ●One soil character for all of Twin Groves
- ●Frost dates read at Twin Groves's scale: Mar 9 to Nov 20
YOUR Parcel
- ✓Your exact zone, not Twin Groves's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Twin Groves
Pull a site-specific report for your exact address in Twin Groves, Arkansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Twin Groves averages can't show:
We read public map data around Twin Groves — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Twin Groves average
How we know this about Twin Groves
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 Twin Groves’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 Twin Groves
When does frost risk typically end in Twin Groves?
The last hard freeze (28°F) in Twin Groves typically lands around Mar 9, 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 Mar 30.
When is the first frost in Twin Groves?
The first hard freeze (28°F) in Twin Groves typically arrives around Nov 20, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 6, so the watching starts about Oct 21 — about 256 days after the spring freeze cleared.
How long is the growing season in Twin Groves?
Measured between 28°F hard freezes, Twin Groves sees about 256 frost-free days — roughly Mar 9 through Nov 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 30 to Nov 6, about 221 days.
Is the soil safe to grow vegetables in Twin Groves?
The federal record around Twin Groves shows 85 documented sites, mostly Underground Storage Tanks entries (48), the nearest Underground Storage Tanks record about 0.3 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.
How do I protect my plants from frost in Twin Groves?
From about Oct 21 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Nov 20 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Nov 20. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Twin Groves's scale — its 8a band and its 256-day season. Your yard writes its own version of Twin Groves'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 Twin Groves’s own scale
6 of the readings below were taken at Twin Groves's own scale — its own ~256-day season between 28°F freezes, the 2,947 acres it covers and 85 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Twin Groves's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Twin Groves's own 28°F hard-freeze dates, about Mar 9 and Nov 20 and the ~256-day span between themNOAA 1991–2020 Climate Normals
- 85 documented contamination sites on the federal record near Twin Groves, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Twin Groves's boundary and the 2,947 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~256-day seasonGrowable Ground crop-matching engine
- The ecoregion at Twin Groves's own centroid, the Arkansas ValleyUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Twin Groves's 2,947 acres read through its county's SSURGO summaryfrom Faulkner County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Faulkner County
- The growing challenges every Arkansas grower plans around — written at state scale, so they stay on the state guidefrom Arkansas
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Faulkner County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Twin Groves's 2,947 acreswhy one lot differs from the next →
- Which side of Twin Groves you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,947 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 miles 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 Twin Groves-wide figureread your own land →
More in Arkansas
Wider growing context
What grows across ArkansasTwin Groves sits outside our named growing regions, so Arkansas as a whole is its closest context here.
Nearby growing guides