Prien, Louisiana, sits in USDA hardiness zone 9b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Crops well matched to these conditions include okra, satsuma orange, live oak, and pecan — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Prien, 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 Prien 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 Prien — soil, climate, flood, and parcel records. How we handle your address.
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Prien — the short answer
Prien, Louisiana: USDA zone 9b, about 313 days between hard freezes, across 3K acres of town.
- USDA zone
- 9b
- 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
- Town 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 Calcasieu Parish’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Prien's average, not your lot's — a low corner or a tree line moves it. Against Prien's 313-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Prien
Each reading below is measured for Prien itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsPrien runs about 313 days between hard freezes (read from Calcasieu Parish, the closest normal to Prien) — 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
MeasuredPrien sits in USDA hardiness zone 9b.
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 Prien is in
Prien sits in the Western Gulf Coastal Plain — EPA Level III, inside the wider Great Plains. That is read at Prien's own centroid rather than borrowed from Calcasieu Parish.
What Grows in Prien
Plants matched to Prien's USDA zones 9b, ordered by how much hardiness margin each has here — the ones with room to spare at both ends of this town's band lead. Each links to its full growing profile.
Is it too late to plant in Prien?
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 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. 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 Prien
Closest first, within ~10 miles of Prien. Listing isn't leaking, and distance isn't exposure.
- Cu-630Nitrate · 2300 ft
- DOLLAR GENERAL STORE #22334Brownfields · 0.9 mi
- Tiger Touch Down #4Underground Storage Tanks · 0.9 mi
- Haymark Properties LLC - Big Lake C-storeUnderground Storage Tanks · 1.0 mi
- Huber Oil #10 - 210Underground Storage Tanks · 1.0 mi
- SIGNKO INCBrownfields · 1.0 mi
- Cu-962Nitrate · 1.0 mi
- The Kansas City Southern Ry CoUnderground Storage Tanks · 1.1 mi
- Assunto's Superior CleanersUnderground Storage Tanks · 1.1 mi
- LAKE AREA EQUIPMENT MAINTENANCE INCBrownfields · 1.1 mi
- Cu-811Nitrate · 1.1 mi
- COUNTRY CLUB PAINT & BODYBrownfields · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Prien'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 Prien.
Sources Checked
within ~10 miles of Prien
Severity Distribution
within ~10 miles of Prien
Highest-Severity Sites
Know Before You Grow
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Prien
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 Prien average
Your land is one point inside Prien
Everything above resolves to Prien as a whole — one PHZM band, read across 3K acres, with hard-freeze dates borrowed from Calcasieu 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 Prien Average
Prien Average
- ●USDA Zones 9b, averaged across Prien
- ●One soil character for all of Prien
- ●Frost dates read at Prien's scale: Jan 30 to Dec 9
YOUR Parcel
- ✓Your exact zone, not Prien's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Prien
Pull a site-specific report for your exact address in Prien, Louisiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Prien averages can't show:
We read public map data around Prien — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Prien average
How we know this about Prien
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 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 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 Prien
When does frost risk typically end in Prien?
The last hard freeze (28°F) in Prien 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 Prien?
The first hard freeze (28°F) in Prien 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 Prien?
Measured between 28°F hard freezes, Prien 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 Prien?
The federal record around Prien is a meaningful one — 1,765 documented sites, mostly Brownfields entries (843), the nearest Nitrate record about 0.4 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 Prien?
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 Prien's scale — its 9b band and its 313-day season. Your yard writes its own version of Prien'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 Prien’s own scale
4 of the readings below were taken at Prien's own scale — the 3,412 acres it covers and 1,765 documented sites around it; 6 are borrowed from a wider read, named and linked below.
Measured here
- Prien's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 1,765 documented contamination sites on the federal record near Prien, the closest Nitrate record about 0.4 miles out from the town centreFederal environmental registers
- Prien's boundary and the 3,412 acres inside itUS Census TIGER/Line 2025
- The ecoregion at Prien's own centroid, the Western Gulf Coastal PlainUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Prien 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 Prien's 3,412 acres read through its county's SSURGO summaryfrom Calcasieu County
- The candidate plant list — Louisiana's curated set, filtered to this zone band and re-ordered by how much margin each has herefrom Louisiana
- 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 Prien's 3,412 acreswhy one lot differs from the next →
- Which side of Prien you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,412 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 0.4 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 Prien-wide figureread your own land →
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