Reserve, Louisiana, sits in USDA hardiness zone 9b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Reliable performers under these conditions include okra, meyer lemon, california poppy, and artichoke; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Reserve, 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 Reserve 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 Reserve — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Reserve — the short answer
Reserve, Louisiana: USDA zone 9b, about 334 days between hard freezes, across 9K acres of town.
- USDA zone
- 9b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jan 21
- St. John the Baptist Parish normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 21
- St. John the Baptist Parish normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~334
- St. John the Baptist Parish normal — NOAA 1991–2020, nearest to this town
- Town area
- 9K 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 St. John the Baptist Parish’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Reserve's average, not your lot's — a low corner or a tree line moves it. Against Reserve's 334-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Reserve
Each reading below is measured for Reserve itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsReserve runs about 334 days between hard freezes (read from St. John the Baptist Parish, the closest normal to Reserve) — 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
MeasuredReserve 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 Reserve is in
Reserve sits in the Mississippi Alluvial Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Reserve's own centroid rather than borrowed from St. John the Baptist Parish.
What Grows in Reserve
Every plant below cleared Reserve's own zone 9b and its 334-day season. Each card opens that plant's Louisiana profile. How we score.
Is it too late to plant in Reserve?
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 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 21 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 21 — 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 Reserve
Closest first, within ~10 miles of Reserve. Listing isn't leaking, and distance isn't exposure.
- Scioneaux LLCUnderground Storage Tanks · 850 ft
- SCIONEAUX LLCBrownfields · 950 ft
- TREGRE INCBrownfields · 950 ft
- Maria's Magic Mart #3Underground Storage Tanks · 1600 ft
- LA Machinery Co Inc - Reserve SiteUnderground Storage Tanks · 2600 ft
- LA MACHINERY CO LLCBrownfields · 0.5 mi
- Reserve Telephone Co IncUnderground Storage Tanks · 0.5 mi
- FILTER MEDIASuperfund · 0.6 mi
- Jones Chemicals IncUnderground Storage Tanks · 0.6 mi
- ENCLEAN INCBrownfields · 0.6 mi
- DPC ENTERPRISES LP - DPCE-RESERVEBrownfields · 0.6 mi
- DPC ENTERPRISES LP - DPCE-RESERVEToxics Release Inventory · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Reserve'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 Reserve.
Total Sites
603
within ~10 miles of Reserve
Risk Level
Elevated
Highest-severity
3 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Reserve
Severity Distribution
within ~10 miles of Reserve
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Reserve, two things run higher than the national average within ~10 miles of Reserve — Toxics Release Inventory (45 sites) and PFAS (5 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Reserve
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 Reserve average
Your land is one point inside Reserve
Everything above resolves to Reserve as a whole — one PHZM band, read across 9K acres, with hard-freeze dates borrowed from St. John the Baptist 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 Reserve Average
Reserve Average
- ●USDA Zones 9b, averaged across Reserve
- ●One soil character for all of Reserve
- ●Frost dates read at Reserve's scale: Jan 21 to Dec 21
YOUR Parcel
- ✓Your exact zone, not Reserve's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Reserve
Pull a site-specific report for your exact address in Reserve, Louisiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Reserve averages can't show:
We read public map data around Reserve — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Reserve average
How we know this about Reserve
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 St. John the Baptist 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 Reserve
When does frost risk typically end in Reserve?
The last hard freeze (28°F) in Reserve typically lands around Jan 21, 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 11.
When is the first frost in Reserve?
The first hard freeze (28°F) in Reserve typically arrives around Dec 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Dec 7, so the watching starts about Nov 21 — about 334 days after the spring freeze cleared.
How long is the growing season in Reserve?
Measured between 28°F hard freezes, Reserve sees about 334 frost-free days — roughly Jan 21 through Dec 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 11 to Dec 7, about 299 days.
Is the soil safe to grow vegetables in Reserve?
The federal record around Reserve is a meaningful one — 603 documented sites, mostly Brownfields entries (251), the nearest Underground Storage Tanks 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 Reserve?
From about Nov 21 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 21 (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 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Reserve's scale — its 9b band and its 334-day season. Your yard writes its own version of Reserve'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 Reserve’s own scale
5 of the readings below were taken at Reserve's own scale — the 9,318 acres it covers and 603 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Reserve's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 603 documented contamination sites on the federal record near Reserve, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Reserve's boundary and the 9,318 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9b and a ~334-day seasonGrowable Ground crop-matching engine
- The ecoregion at Reserve's own centroid, the Mississippi Alluvial PlainUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Reserve has no normal of its own, so its county's is the closest measured readfrom St. John the Baptist Parish
- Soil character — no town-scale survey exists, so Reserve's 9,318 acres read through its county's SSURGO summaryfrom St. John the Baptist County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom St. John the Baptist 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 St. John the Baptist County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Reserve's 9,318 acreswhy one lot differs from the next →
- Which side of Reserve you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 9,318 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Reserve-wide figureread your own land →