Richwood, 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.
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 Richwood, 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 Richwood 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 Richwood — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Richwood — the short answer
Richwood, Louisiana: USDA zone 8b, about 284 days between hard freezes, across 2K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 18
- Ouachita Parish normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 29
- Ouachita Parish normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~284
- Ouachita Parish normal — NOAA 1991–2020, nearest to this town
- Town area
- 2K 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 Ouachita Parish’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Richwood's average, not your lot's — a low corner or a tree line moves it. Against Richwood's 284-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Richwood
Each reading below is measured for Richwood itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsRichwood runs about 284 days between hard freezes (read from Ouachita Parish, the closest normal to Richwood) — 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
MeasuredRichwood 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 Richwood is in
Richwood sits in the Mississippi Alluvial Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Richwood's own centroid, and it is not what its county reads: Ouachita Parish is mostly South Central Plains. The wider page above you is answering a different question about different ground.
What Grows in Richwood
Every plant below cleared Richwood'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 Richwood?
For most of the year, no — what changes is which crops still fit the days remaining. 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. 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 Richwood
Closest first, within ~10 miles of Richwood. Listing isn't leaking, and distance isn't exposure.
- Ke-Ro Mini MartUnderground Storage Tanks · 2600 ft
- Day House MoversUnderground Storage Tanks · 0.6 mi
- DAVES AUTO BODYBrownfields · 0.8 mi
- Winters Exxon StationUnderground Storage Tanks · 0.8 mi
- Pickett Industries Inc - Custom Food Group FacilityUnderground Storage Tanks · 0.8 mi
- Ou-199Nitrate · 0.8 mi
- Ellington Construction CoUnderground Storage Tanks · 1.2 mi
- Baroid Drilling Fluids IncUnderground Storage Tanks · 1.2 mi
- LOUISIANA MACHINERY CO. LLCBrownfields · 1.3 mi
- SOUTHEASTERN FREIGHT LINES INC - DISTRIBUTION FACILITYBrownfields · 1.3 mi
- Louisiana Machinery Co LLCUnderground Storage Tanks · 1.3 mi
- BELLSOUTH K4286Brownfields · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Richwood'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 Richwood.
Total Sites
1,186
within ~10 miles of Richwood
Risk Level
Elevated
Highest-severity
33 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Richwood
Severity Distribution
within ~10 miles of Richwood
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Richwood
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 Richwood average
Your land is one point inside Richwood
Everything above resolves to Richwood as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Ouachita 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 Richwood Average
Richwood Average
- ●USDA Zones 8b, averaged across Richwood
- ●One soil character for all of Richwood
- ●Frost dates read at Richwood's scale: Feb 18 to Nov 29
YOUR Parcel
- ✓Your exact zone, not Richwood's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Richwood
Pull a site-specific report for your exact address in Richwood, Louisiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Richwood averages can't show:
We read public map data around Richwood — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Richwood average
How we know this about Richwood
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 Ouachita 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 Richwood
When does frost risk typically end in Richwood?
The last hard freeze (28°F) in Richwood 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 Richwood?
The first hard freeze (28°F) in Richwood 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 Richwood?
Measured between 28°F hard freezes, Richwood 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 Richwood?
The federal record around Richwood is a meaningful one — 1,186 documented sites, mostly Underground Storage Tanks entries (552), the nearest Underground Storage Tanks record about 0.5 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 Richwood?
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 Richwood's scale — its 8b band and its 284-day season. Your yard writes its own version of Richwood'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 Richwood’s own scale
5 of the readings below were taken at Richwood's own scale — the 1,610 acres it covers and 1,186 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Richwood's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 1,186 documented contamination sites on the federal record near Richwood, the closest Underground Storage Tanks record about 0.5 miles out from the town centreFederal environmental registers
- Richwood's boundary and the 1,610 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~284-day seasonGrowable Ground crop-matching engine
- Richwood 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 — Richwood has no normal of its own, so its county's is the closest measured readfrom Ouachita Parish
- Soil character — no town-scale survey exists, so Richwood's 1,610 acres read through its county's SSURGO summaryfrom Ouachita County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Ouachita 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 Ouachita County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Richwood's 1,610 acreswhy one lot differs from the next →
- Which side of Richwood you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,610 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.5 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 Richwood-wide figureread your own land →
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