Columbia, Louisiana, sits in USDA hardiness zone 8b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Expect cabbage, fig, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Columbia, 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 Columbia 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 Columbia — soil, climate, flood, and parcel records. How we handle your address.
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Columbia — the short answer
Columbia, Louisiana: USDA zone 8b, about 284 days between hard freezes, across 489 acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 18
- Caldwell Parish normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 29
- Caldwell Parish normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~284
- Caldwell Parish normal — NOAA 1991–2020, nearest to this town
- Town area
- 489 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 Caldwell Parish’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Columbia's average, not your lot's — a low corner or a tree line moves it. Against Columbia's 284-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Columbia
Each reading below is measured for Columbia itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsColumbia runs about 284 days between hard freezes (read from Caldwell Parish, the closest normal to Columbia) — 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
MeasuredColumbia 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 Columbia is in
Columbia sits in the Mississippi Alluvial Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Columbia's own centroid, and it is not what its county reads: Caldwell Parish is mostly South Central Plains. The wider page above you is answering a different question about different ground.
What Grows in Columbia
Every plant below cleared Columbia's own zone 8b and its 284-day season. Each card opens that plant's Louisiana profile. How we score.
Is it too late to plant in Columbia?
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 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 29 — long-season crops need about 90 days of runway, quick greens only 30. In a climate this gentle, “too late” hardly applies — the question becomes which crops prefer the cooler months ahead.
What's on the federal record near Columbia
Closest first, within ~10 miles of Columbia. Listing isn't leaking, and distance isn't exposure.
- Caldwell Memorial HospitalUnderground Storage Tanks · 650 ft
- WINTERS CLINICBrownfields · 750 ft
- CALDWELL MEMORIAL HOSPITALBrownfields · 750 ft
- Brockner OilUnderground Storage Tanks · 1200 ft
- SP# 015-06-0038 Par 4-4 Sta 100+645/100*650Underground Storage Tanks · 1200 ft
- SP# 015-06-0038 Sta 100+643Underground Storage Tanks · 1200 ft
- Columbia PhillipsUnderground Storage Tanks · 1300 ft
- Excel Mart #3Underground Storage Tanks · 1300 ft
- Ca-129Nitrate · 1400 ft
- DELTA PRINTING COMPANYBrownfields · 1400 ft
- TRIPLE K OIL RECOVERYBrownfields · 1400 ft
- WESTERN AUTOBrownfields · 1400 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Columbia'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 Columbia.
Total Sites
162
within ~10 miles of Columbia
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Columbia
Severity Distribution
within ~10 miles of Columbia
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Columbia, Nitrate runs higher than the national average — 80 sites within ~10 miles of Columbia. 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 Columbia
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 Columbia average
Your land is one point inside Columbia
Everything above resolves to Columbia as a whole — one PHZM band, read across 489 acres, with hard-freeze dates borrowed from Caldwell Parish’s record because no 30-year normal resolves at this town’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 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 Columbia Average
Columbia Average
- ●USDA Zones 8b, averaged across Columbia
- ●One soil character for all of Columbia
- ●Frost dates read at Columbia's scale: Feb 18 to Nov 29
YOUR Parcel
- ✓Your exact zone, not Columbia's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Columbia
Pull a site-specific report for your exact address in Columbia, Louisiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Columbia averages can't show:
We read public map data around Columbia — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Columbia average
How we know this about Columbia
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 Caldwell 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 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 Columbia
When does frost risk typically end in Columbia?
The last hard freeze (28°F) in Columbia typically lands around Feb 18, 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 11.
When is the first frost in Columbia?
The first hard freeze (28°F) in Columbia typically arrives around Nov 29, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 15, so the watching starts about Oct 30 — about 284 days after the spring freeze cleared.
How long is the growing season in Columbia?
Measured between 28°F hard freezes, Columbia sees about 284 frost-free days — roughly Feb 18 through Nov 29, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 11 to Nov 15, about 249 days.
Is the soil safe to grow vegetables in Columbia?
The federal record around Columbia shows 162 documented sites, mostly Nitrate entries (80), the nearest Underground Storage Tanks record about 0.1 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 Columbia?
From about Oct 30 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 29 (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 29. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Columbia's scale — its 8b band and its 284-day season. Your yard writes its own version of Columbia'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 Columbia’s own scale
5 of the readings below were taken at Columbia's own scale — the 489 acres it covers and 162 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Columbia's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 162 documented contamination sites on the federal record near Columbia, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Columbia's boundary and the 489 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~284-day seasonGrowable Ground crop-matching engine
- Columbia sits in the Mississippi Alluvial Plain — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Columbia has no normal of its own, so its county's is the closest measured readfrom Caldwell Parish
- Soil character — no town-scale survey exists, so Columbia's 489 acres read through its county's SSURGO summaryfrom Caldwell County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Caldwell 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 Caldwell County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Columbia's 489 acreswhy one lot differs from the next →
- Which side of Columbia you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 489 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Columbia-wide figureread your own land →
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