Joiner, Arkansas, sits in USDA hardiness zone 8a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, cabbage, fig, california poppy, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Joiner, 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 Joiner 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 Joiner — soil, climate, flood, and parcel records. How we handle your address.
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Joiner — the short answer
Joiner, Arkansas: USDA zone 8a, about 263 days between hard freezes, across 394 acres of city.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 24
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~263
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 394 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 Joiner's average, not your lot's — a low corner or a tree line moves it. Against Joiner's 263-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Joiner
Each reading below is measured for Joiner itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredJoiner runs about 263 days between hard freezes — close to year-round growing.
Frost is rarely the limit here; winter plantings are as real as summer ones, and the harder question is which crops shrug off the summer heat.
Grow cool-season crops through the mild winter, and choose heat-tolerant varieties for the summer beds.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredJoiner 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 Joiner is in
Joiner sits in the Mississippi Alluvial Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Joiner's own centroid rather than borrowed from Mississippi County.
What Grows in Joiner
Every plant below cleared Joiner's own zone 8a and its 263-day season. Each card opens that plant's Arkansas profile. How we score.
Is it too late to plant in Joiner?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Feb 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 6 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 24 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.
Documented around Joiner
Survey cells within 31 miles of Joiner checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 194 miles off. What to watch for.
What's on the federal record near Joiner
Closest first, within ~10 miles of Joiner. Listing isn't leaking, and distance isn't exposure.
- WINFORD EXXON STATIONUnderground Storage Tanks · 400 ft
- 10N09E08ABA1Nitrate · 400 ft
- JOINER MARKETUnderground Storage Tanks · 1000 ft
- 10N09E05DDD1Nitrate · 1700 ft
- SHAWNEE ELEMENTRY CAMPUSUnderground Storage Tanks · 1.9 mi
- ELROD'S STATIONUnderground Storage Tanks · 2.2 mi
- J.P. FLASH MARTET #327Underground Storage Tanks · 2.3 mi
- FRENCHMAN'S BAYOU GROCERYUnderground Storage Tanks · 3.3 mi
- CROP PRODUCTION SERVICES INCUnderground Storage Tanks · 3.5 mi
- PHILLIP LEE FORRESTERUnderground Storage Tanks · 3.9 mi
- 10N09E13ACC1Nitrate · 4.2 mi
- 11N09E26ABA2Nitrate · 4.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Joiner'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 Joiner.
Total Sites
61
within ~10 miles of Joiner
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Joiner
Severity Distribution
within ~10 miles of Joiner
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Joiner, Nitrate runs higher than the national average — 40 sites within ~10 miles of Joiner. 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 Joiner
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 Joiner average
Your land is one point inside Joiner
Everything above resolves to Joiner as a whole — one PHZM band and one 28°F frost record, read across 394 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 city 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 Joiner Average
Joiner Average
- ●USDA Zones 8a, averaged across Joiner
- ●One soil character for all of Joiner
- ●Frost dates read at Joiner's scale: Mar 6 to Nov 24
YOUR Parcel
- ✓Your exact zone, not Joiner's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Joiner
Pull a site-specific report for your exact address in Joiner, Arkansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Joiner averages can't show:
We read public map data around Joiner — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Joiner average
How we know this about Joiner
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Joiner’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 city grain anywhere on this page — there is no city-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 Joiner
When does frost risk typically end in Joiner?
The last hard freeze (28°F) in Joiner typically lands around Mar 6, 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 27.
When is the first frost in Joiner?
The first hard freeze (28°F) in Joiner typically arrives around Nov 24, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 10, so the watching starts about Oct 25 — about 263 days after the spring freeze cleared.
How long is the growing season in Joiner?
Measured between 28°F hard freezes, Joiner sees about 263 frost-free days — roughly Mar 6 through Nov 24, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 27 to Nov 10, about 228 days.
Is the soil safe to grow vegetables in Joiner?
The federal record around Joiner is a meaningful one — 61 documented sites, mostly Nitrate entries (40), the nearest Underground Storage Tanks record under a tenth of a mile 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.
How do I protect my plants from frost in Joiner?
From about Oct 25 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 24 (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 24. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Joiner's scale — its 8a band and its 263-day season. Your yard writes its own version of Joiner'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 Joiner’s own scale
7 of the readings below were taken at Joiner's own scale — its own ~263-day season between 28°F freezes, the 394 acres it covers and 61 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Joiner's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Joiner's own 28°F hard-freeze dates, about Mar 6 and Nov 24 and the ~263-day span between themNOAA 1991–2020 Climate Normals
- 61 documented contamination sites on the federal record near Joiner, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Joiner's boundary and the 394 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~263-day seasonGrowable Ground crop-matching engine
- The ecoregion at Joiner's own centroid, the Mississippi Alluvial PlainUS EPA Level III Ecoregions
- Lanternfly survey cells around Joiner checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Joiner's 394 acres read through its county's SSURGO summaryfrom Mississippi County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Mississippi 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 Mississippi County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Joiner's 394 acreswhy one lot differs from the next →
- Which side of Joiner you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 394 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 Joiner-wide figureread your own land →
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