Winnsboro, Louisiana, sits in USDA hardiness zone 8b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
These conditions suit cabbage, fig, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Winnsboro, 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 Winnsboro 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 Winnsboro — soil, climate, flood, and parcel records. How we handle your address.
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Winnsboro — the short answer
Winnsboro, Louisiana: USDA zone 8b, about 285 days between hard freezes, across 3K acres of city.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 16
- Franklin Parish normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 28
- Franklin Parish normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~285
- Franklin Parish normal — NOAA 1991–2020, nearest to this town
- City area
- 3K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Franklin Parish’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Winnsboro's average, not your lot's — a low corner or a tree line moves it. Against Winnsboro's 285-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Winnsboro
Each reading below is measured for Winnsboro itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsWinnsboro runs about 285 days between hard freezes (read from Franklin Parish, the closest normal to Winnsboro) — 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
MeasuredWinnsboro sits in USDA hardiness zone 8b.
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 Winnsboro is in
Winnsboro sits in the Mississippi Alluvial Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Winnsboro's own centroid rather than borrowed from Franklin Parish.
What Grows in Winnsboro
Every plant below cleared Winnsboro's own zone 8b and its 285-day season. Each card opens that plant's Louisiana profile. How we score.
Is it too late to plant in Winnsboro?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Jan 19; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 16 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 28 — 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.
What's on the federal record near Winnsboro
Closest first, within ~10 miles of Winnsboro. Listing isn't leaking, and distance isn't exposure.
- A&C TexacoUnderground Storage Tanks · 200 ft
- Norman's TexacoUnderground Storage Tanks · 400 ft
- Bobby's CornerUnderground Storage Tanks · 500 ft
- HAWTHORNES CLNRS & LAUNDRY INCBrownfields · 650 ft
- Grab ItUnderground Storage Tanks · 700 ft
- Martin Brothers IncUnderground Storage Tanks · 800 ft
- Fr-6Nitrate · 950 ft
- BOYD MUFFLER & EXHAUSTBrownfields · 1000 ft
- J L & J N Donnell IncUnderground Storage Tanks · 1100 ft
- Community GroceryUnderground Storage Tanks · 1100 ft
- Chicago MillsUnderground Storage Tanks · 1100 ft
- Russell Flying ServiceUnderground Storage Tanks · 1100 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Winnsboro'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 Winnsboro.
Total Sites
224
within ~10 miles of Winnsboro
Risk Level
Elevated
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Winnsboro
Severity Distribution
within ~10 miles of Winnsboro
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Winnsboro, Nitrate runs higher than the national average — 90 sites within ~10 miles of Winnsboro. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Winnsboro
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 Winnsboro average
Your land is one point inside Winnsboro
Everything above resolves to Winnsboro as a whole — one PHZM band, read across 3K acres, with hard-freeze dates borrowed from Franklin Parish’s record because no 30-year normal resolves at this city’s own centroid. 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 Winnsboro Average
Winnsboro Average
- ●USDA Zones 8b, averaged across Winnsboro
- ●One soil character for all of Winnsboro
- ●Frost dates read at Winnsboro's scale: Feb 16 to Nov 28
YOUR Parcel
- ✓Your exact zone, not Winnsboro's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Winnsboro
Pull a site-specific report for your exact address in Winnsboro, Louisiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Winnsboro averages can't show:
We read public map data around Winnsboro — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Winnsboro average
How we know this about Winnsboro
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 Franklin Parish’s record, because none resolves here; 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 Winnsboro
When does frost risk typically end in Winnsboro?
The last hard freeze (28°F) in Winnsboro typically lands around Feb 16, 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 9.
When is the first frost in Winnsboro?
The first hard freeze (28°F) in Winnsboro typically arrives around Nov 28, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 14, so the watching starts about Oct 29 — about 285 days after the spring freeze cleared.
How long is the growing season in Winnsboro?
Measured between 28°F hard freezes, Winnsboro sees about 285 frost-free days — roughly Feb 16 through Nov 28, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 9 to Nov 14, about 250 days.
Is the soil safe to grow vegetables in Winnsboro?
The federal record around Winnsboro is a meaningful one — 224 documented sites, mostly Nitrate entries (90), 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 Winnsboro?
From about Oct 29 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 28 (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 28. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Winnsboro's scale — its 8b band and its 285-day season. Your yard writes its own version of Winnsboro'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 Winnsboro’s own scale
5 of the readings below were taken at Winnsboro's own scale — the 2,559 acres it covers and 224 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Winnsboro's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 224 documented contamination sites on the federal record near Winnsboro, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Winnsboro's boundary and the 2,559 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~285-day seasonGrowable Ground crop-matching engine
- The ecoregion at Winnsboro's own centroid, the Mississippi Alluvial PlainUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Winnsboro has no normal of its own, so its county's is the closest measured readfrom Franklin Parish
- Soil character — no town-scale survey exists, so Winnsboro's 2,559 acres read through its county's SSURGO summaryfrom Franklin County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Franklin County
- The growing challenges every Louisiana grower plans around — written at state scale, so they stay on the state guidefrom Louisiana
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Franklin County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Winnsboro's 2,559 acreswhy one lot differs from the next →
- Which side of Winnsboro you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,559 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 Winnsboro-wide figureread your own land →
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