DeQuincy, Louisiana, sits in USDA hardiness zone 9a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
A short list that earns its place here — artichoke, fig, california poppy, and cabbage — with any one site's soil, sun, and drainage making the final cut.
Even in DeQuincy, 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 DeQuincy 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 DeQuincy — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
DeQuincy — the short answer
DeQuincy, Louisiana: USDA zone 9a, about 313 days between hard freezes, across 2K acres of city.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jan 30
- Calcasieu Parish normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 9
- Calcasieu Parish normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~313
- Calcasieu Parish normal — NOAA 1991–2020, nearest to this town
- City 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 Calcasieu Parish’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is DeQuincy's average, not your lot's — a low corner or a tree line moves it. Against DeQuincy's 313-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in DeQuincy
Each reading below is measured for DeQuincy itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsDeQuincy runs about 313 days between hard freezes (read from Calcasieu Parish, the closest normal to DeQuincy) — 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
MeasuredDeQuincy sits in USDA hardiness zone 9a.
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 DeQuincy is in
DeQuincy sits in the South Central Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at DeQuincy's own centroid, and it is not what its county reads: Calcasieu Parish is mostly Western Gulf Coastal Plain. The wider page above you is answering a different question about different ground.
What Grows in DeQuincy
Every plant below cleared DeQuincy's own zone 9a and its 313-day season. Each card opens that plant's Louisiana profile. How we score.
Is it too late to plant in DeQuincy?
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 2; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 30 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 9 — long-season crops need about 90 days of runway, quick greens only 30. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
What's on the federal record near DeQuincy
Closest first, within ~10 miles of DeQuincy. Listing isn't leaking, and distance isn't exposure.
- CALCASIEU PAR SCH BD DEQUINCYBrownfields · 800 ft
- O'REILLY AUTO PARTSBrownfields · 1200 ft
- 5 Star Quick Stop #3Underground Storage Tanks · 1600 ft
- DOLLAR GENERAL STORE #22987Brownfields · 1700 ft
- Dequincy BayouUnderground Storage Tanks · 2000 ft
- Pekar's Auto Repair & Lube LLCUnderground Storage Tanks · 2100 ft
- Wood's Services StationUnderground Storage Tanks · 2200 ft
- Tigerland FastStopUnderground Storage Tanks · 2600 ft
- Brookshire Brothers #31Underground Storage Tanks · 2600 ft
- DEQUINCY MEMORIAL HOSPITALBrownfields · 0.6 mi
- DeQuincy Memorial HospitalUnderground Storage Tanks · 0.6 mi
- Greenhill Nursing HomeUnderground Storage Tanks · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from DeQuincy'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 DeQuincy.
Total Sites
77
within ~10 miles of DeQuincy
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of DeQuincy
Severity Distribution
within ~10 miles of DeQuincy
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around DeQuincy, Nitrate runs higher than the national average — 22 sites within ~10 miles of DeQuincy. 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 DeQuincy
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 DeQuincy average
Your land is one point inside DeQuincy
Everything above resolves to DeQuincy as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Calcasieu 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 DeQuincy Average
DeQuincy Average
- ●USDA Zones 9a, averaged across DeQuincy
- ●One soil character for all of DeQuincy
- ●Frost dates read at DeQuincy's scale: Jan 30 to Dec 9
YOUR Parcel
- ✓Your exact zone, not DeQuincy's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in DeQuincy
Pull a site-specific report for your exact address in DeQuincy, Louisiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that DeQuincy averages can't show:
We read public map data around DeQuincy — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the DeQuincy average
How we know this about DeQuincy
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 Calcasieu 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 DeQuincy
When does frost risk typically end in DeQuincy?
The last hard freeze (28°F) in DeQuincy typically lands around Jan 30, 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 Feb 20.
When is the first frost in DeQuincy?
The first hard freeze (28°F) in DeQuincy typically arrives around Dec 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 25, so the watching starts about Nov 9 — about 313 days after the spring freeze cleared.
How long is the growing season in DeQuincy?
Measured between 28°F hard freezes, DeQuincy sees about 313 frost-free days — roughly Jan 30 through Dec 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 20 to Nov 25, about 278 days.
Is the soil safe to grow vegetables in DeQuincy?
The federal record around DeQuincy is a meaningful one — 77 documented sites, mostly Underground Storage Tanks entries (34), the nearest Brownfields record about 0.2 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 DeQuincy?
From about Nov 9 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 Dec 9 (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 Dec 9. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at DeQuincy's scale — its 9a band and its 313-day season. Your yard writes its own version of DeQuincy'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 DeQuincy’s own scale
5 of the readings below were taken at DeQuincy's own scale — the 2,044 acres it covers and 77 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- DeQuincy's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 77 documented contamination sites on the federal record near DeQuincy, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- DeQuincy's boundary and the 2,044 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~313-day seasonGrowable Ground crop-matching engine
- DeQuincy sits in the South Central Plains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — DeQuincy has no normal of its own, so its county's is the closest measured readfrom Calcasieu Parish
- Soil character — no town-scale survey exists, so DeQuincy's 2,044 acres read through its county's SSURGO summaryfrom Calcasieu County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Calcasieu 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 Calcasieu County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among DeQuincy's 2,044 acreswhy one lot differs from the next →
- Which side of DeQuincy you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,044 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 DeQuincy-wide figureread your own land →
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