What Grows in Walnut Ridge, Arkansas

USDA Zones 8a · 11K acres

Walnut Ridge, Arkansas, sits in USDA hardiness zone 8a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.

Well-matched crops include cabbage, fig, california poppy, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.

Score your parcel · free

Even in Walnut Ridge, 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 Walnut Ridge 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 Walnut Ridge — soil, climate, flood, and parcel records. How we handle your address.

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Walnut Ridge — the short answer

Walnut Ridge, Arkansas: USDA zone 8a, about 257 days between hard freezes, across 11K acres of city.

USDA zone
8a
USDA PHZM 2023
Last hard freeze (28°F)
Mar 11
NOAA 1991–2020 Climate Normals, 28°F — this town
First hard freeze (28°F)
Nov 23
NOAA 1991–2020 Climate Normals, 28°F — this town
Days between freezes
~257
NOAA 1991–2020 Climate Normals, 28°F — this town
City area
11K 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

8a8a
3a (Cold)13b (Hot)

Zone 8a is Walnut Ridge's average, not your lot's — a low corner or a tree line moves it. Against Walnut Ridge's 257-day season, see what your own ground reads.

Soil varies lot by lot — soil types explained.

What this means for growing in Walnut Ridge

Each reading below is measured for Walnut Ridge itself — here is what it means for a garden here, and the move an experienced grower makes about it.

Season length

Measured

Walnut Ridge runs about 257 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

Measured

Walnut Ridge 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 Walnut Ridge is in

Walnut Ridge sits in the Mississippi Alluvial Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Walnut Ridge's own centroid rather than borrowed from Lawrence County.

What that means for soil

What Grows in Walnut Ridge

Every plant below cleared Walnut Ridge's own zone 8a and its 257-day season. Each card opens that plant's Arkansas profile. How we score.

cabbage, photograph
Growing cabbage in ArkansasZones 2–11Walnut Ridge's 8a — 6 zones of cold margin.
fig, photograph
Arkansas fig guideZones 6–10Walnut Ridge's 8a — 2 zones of cold margin.
California poppy, photograph
California poppy in ArkansasZones 6–10Walnut Ridge's 8a — 2 zones of cold margin.
collard greens, photograph
Collard greens: Arkansas growing notesZones 2–11Walnut Ridge's 8a — 6 zones of cold margin.
prickly pear, photograph
Growing prickly pear in ArkansasZones 5–10Walnut Ridge's 8a — 3 zones of cold margin.
lavender, photograph
Arkansas lavender guideZones 5–8Walnut Ridge's 8a — 3 zones of cold margin.
garlic, photograph
Garlic in ArkansasZones 2–10Walnut Ridge's 8a — 6 zones of cold margin.
grape, photograph
Grape: Arkansas growing notesZones 6–9Walnut Ridge's 8a — 2 zones of cold margin.
rosemary, photograph
Growing rosemary in ArkansasZones 8–10Walnut Ridge's 8a is its exact cold limit.
kale, photograph
Arkansas kale guideZones 2–11Walnut Ridge's 8a — 6 zones of cold margin.
hazelnut, photograph
Hazelnut in ArkansasZones 4–9Walnut Ridge's 8a — 4 zones of cold margin.
lentil, photograph
Lentil: Arkansas growing notesZones 2–11Walnut Ridge's 257 days clear the ~70 it needs.
loquat, photograph
Growing loquat in ArkansasZones 7–10Walnut Ridge's 8a — 1 zone of cold margin.
okra, photograph
Arkansas okra guideZones 2–12Walnut Ridge's 257 days clear the ~50 it needs.
potato, photograph
Potato in ArkansasZones 2–11Walnut Ridge's 8a — 6 zones of cold margin.
iris, photograph
Iris: Arkansas growing notesZones 3–10Walnut Ridge's 8a — 5 zones of cold margin.
sunflower, photograph
Growing sunflower in ArkansasZones 2–11Walnut Ridge's 257 days clear the ~70 it needs.
Apache plume, photograph
Arkansas apache plume guideZones 5–11Walnut Ridge's 8a — 3 zones of cold margin.
hops, photograph
Hops in ArkansasZones 3–8Walnut Ridge's 8a — 5 zones of cold margin.
hosta, photograph
Hosta: Arkansas growing notesZones 3–8Walnut Ridge's 8a — 5 zones of cold margin.
French marigold, photograph
Growing french marigold in ArkansasWalnut Ridge's 257 days clear the ~50 it needs.
holly, photograph
Arkansas holly guideZones 5–11Walnut Ridge's 8a — 3 zones of cold margin.
Carolina jessamine, photograph
Carolina jessamine in ArkansasZones 7–10Walnut Ridge's 8a — 1 zone of cold margin.
tulip, photograph
Tulip: Arkansas growing notesZones 6–8Walnut Ridge's 8a — 2 zones of cold margin.
Douglas fir, photograph
Growing douglas fir in ArkansasZones 4–10Walnut Ridge's 8a — 4 zones of cold margin.
Ethiopian mustard, photograph
Arkansas ethiopian mustard guideZones 4–10Walnut Ridge's 8a — 4 zones of cold margin.
ajuga, photograph
Ajuga in ArkansasZones 5–11Walnut Ridge's 8a — 3 zones of cold margin.
redbud, photograph
Redbud: Arkansas growing notesZones 5–11Walnut Ridge's 8a — 3 zones of cold margin.
Japanese millet, photograph
Growing japanese millet in ArkansasZones 5–10Walnut Ridge's 257 days clear the ~45 it needs.
blue grama, photograph
Arkansas blue grama guideZones 3–10Walnut Ridge's 257 days clear the ~90 it needs.

Is it too late to plant in Walnut Ridge?

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 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 11 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 23 — 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 Walnut Ridge

Closest first, within ~10 miles of Walnut Ridge. Listing isn't leaking, and distance isn't exposure.

  1. BC EXPRESS LLCUnderground Storage Tanks · 0.6 mi
  2. KUM AND GOUnderground Storage Tanks · 0.6 mi
  3. OLD WALMART PARKING LOTBrownfields · 0.6 mi
  4. CRS @ LAWRENCE COUNTY ROAD SHOPBrownfields · 0.6 mi
  5. CAMPBELL'S TERMITE & PEST CONTUnderground Storage Tanks · 0.7 mi
  6. JIM'S EXXONUnderground Storage Tanks · 0.9 mi
  7. FLASH MARKET #39Underground Storage Tanks · 1.1 mi
  8. FLASH MARKET #374Underground Storage Tanks · 1.1 mi
  9. KERR-MCGEE #6307Underground Storage Tanks · 1.1 mi
  10. LAWRENCE GULF STATIONUnderground Storage Tanks · 1.2 mi
  11. BEST STOP #3Underground Storage Tanks · 1.2 mi
  12. WALNUT RIDGE REGIONAL AIRPORTUnderground Storage Tanks · 1.2 mi

6 more sites are on the record inside the same radius. See them on the map

Measured from Walnut Ridge'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 Walnut Ridge.

Total Sites

129

within ~10 miles of Walnut Ridge

Risk Level

Elevated

Highest-severity

1 Superfund site

Severity Distribution

within ~10 miles of Walnut Ridge

High5Moderate60Low64

Highest-Severity Sites

Clay CO Reg Water District
PFAS Sampling · PFAS Detected
Campbell Zinc CO'S Shafts 2 & 3
Mining Sites · Past Producer
Frit Industries
Superfund · Superfund NPL
Lawrence CO Reg Water Dist
PFAS Sampling · PFAS Detected
Unk
Mining Sites · Past Producer

A note from Gnorman

What an experienced grower watches for around here

In and around Walnut Ridge, two things run higher than the national average within ~10 miles of Walnut Ridge — PFAS (4 sites) and Toxics Release Inventory (10 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.

PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.

Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.

Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.

Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.

Free Report

Check your specific parcel in Walnut Ridge

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 Walnut Ridge average

Your land is one point inside Walnut Ridge

Everything above resolves to Walnut Ridge as a whole — one PHZM band and one 28°F frost record, read across 11K 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 Walnut Ridge Average

Walnut Ridge Average

  • USDA Zones 8a, averaged across Walnut Ridge
  • One soil character for all of Walnut Ridge
  • Frost dates read at Walnut Ridge's scale: Mar 11 to Nov 23

YOUR Parcel

  • Your exact zone, not Walnut Ridge's 8a
  • Your SSURGO soil type & pH
  • Your sun exposure, cast in 3D

See MY Growing Report

Free Report

Read your specific parcel in Walnut Ridge

Pull a site-specific report for your exact address in Walnut Ridge, Arkansas — soil, sun, drainage, frost risk, and scored plant recommendations.

Three things about your lot that Walnut Ridge averages can't show:

Your soil pHYour frost-free days — Walnut Ridge averages 257Your sun & shade

We read public map data around Walnut Ridge — soil, climate, flood, and parcel records. How we handle your address.

25+ data sources read at your address, not the Walnut Ridge average

How we know this about Walnut Ridge

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 Walnut Ridge’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 Walnut Ridge

When does frost risk typically end in Walnut Ridge?

The last hard freeze (28°F) in Walnut Ridge typically lands around Mar 11, 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 1.

When is the first frost in Walnut Ridge?

The first hard freeze (28°F) in Walnut Ridge typically arrives around Nov 23, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 9, so the watching starts about Oct 24 — about 257 days after the spring freeze cleared.

How long is the growing season in Walnut Ridge?

Measured between 28°F hard freezes, Walnut Ridge sees about 257 frost-free days — roughly Mar 11 through Nov 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 1 to Nov 9, about 222 days.

Is the soil safe to grow vegetables in Walnut Ridge?

The federal record around Walnut Ridge is a meaningful one — 129 documented sites, mostly Underground Storage Tanks entries (70), the nearest Underground Storage Tanks record about 0.6 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.

How do I protect my plants from frost in Walnut Ridge?

From about Oct 24 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 23 (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 23. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.

Everything above is measured at Walnut Ridge's scale — its 8a band and its 257-day season. Your yard writes its own version of Walnut Ridge'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 Walnut Ridge’s own scale

6 of the readings below were taken at Walnut Ridge's own scale — its own ~257-day season between 28°F freezes, the 10,683 acres it covers and 129 documented sites around it; 4 are borrowed from a wider read, named and linked below.

Measured here

  • Walnut Ridge's own USDA hardiness band, zones 8aUSDA PHZM 2023
  • Walnut Ridge's own 28°F hard-freeze dates, about Mar 11 and Nov 23 and the ~257-day span between themNOAA 1991–2020 Climate Normals
  • 129 documented contamination sites on the federal record near Walnut Ridge, the closest Underground Storage Tanks record about 0.6 miles out from the town centreFederal environmental registers
  • Walnut Ridge's boundary and the 10,683 acres inside itUS Census TIGER/Line 2025
  • Which of 1,086 plants clear zones 8a and a ~257-day seasonGrowable Ground crop-matching engine
  • The ecoregion at Walnut Ridge's own centroid, the Mississippi Alluvial PlainUS EPA Level III Ecoregions

Inherited from a wider read

  • Soil character — no town-scale survey exists, so Walnut Ridge's 10,683 acres read through its county's SSURGO summaryfrom Lawrence County
  • Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Lawrence 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 Lawrence County

What this page can’t tell you

  • The soil pH, drainage, sun hours, and frost pockets on any one lot among Walnut Ridge's 10,683 acreswhy one lot differs from the next
  • Which side of Walnut Ridge you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 10,683 acresreading your own microclimate
  • How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.6 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 Walnut Ridge-wide figureread your own land
The next step finer is your own address