Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 71375 — Waterproof, LA

ZIP code 71375 (Waterproof, Tensas County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 13 and the first fall frost November 10.

Where ZIP 71375 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone8b15 to 20 °F

Coldest night−9.4 to −6.7 °C

Last frostMar 13

First frostNov 10

2012 zone8b

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Waterproof, LA…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Waterproof, LA

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostMarch 13median — 50% chance of a later frost

Safe for tender plantsApril 4only 10% chance of frost after

First fall frostNovember 10median — 10% chance by Oct 27

Growing season242 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 27 and returns around November 22.

From the NOAA station St Joseph 3 N, LA — 16 miles away, elevation 79 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 71375

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 30 – Feb 13

SpinachSow outdoors · Jan 30 – Feb 20

Broccoli, cabbageStart indoors · Jan 2 – Jan 16

Broccoli, cabbageTransplant · Feb 20 – Mar 6

Onion setsPlant outdoors · Feb 13 – Feb 27

PotatoesPlant outdoors · Feb 20 – Mar 6

LettuceSow outdoors · Feb 13 – Feb 27

Carrots, beetsSow outdoors · Feb 20 – Mar 6

TomatoesStart indoors · Jan 16 – Jan 30

TomatoesTransplant · Mar 20 – Apr 3

Peppers, eggplantStart indoors · Jan 2 – Jan 16

Peppers, eggplantTransplant · Mar 27 – Apr 10

BeansSow outdoors · Mar 20 – Apr 3

Sweet cornSow outdoors · Mar 20 – Apr 3

Cucumbers, squashSow outdoors · Mar 20 – Apr 3

Fall lettuce, spinachSow outdoors · Sep 15 – Sep 29

GarlicPlant cloves · Oct 27 – Dec 1

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 13) and first fall frost (Nov 10) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 71375 came on Jan 31 — about the same time as the 1991–2020 average (Feb 1).

average
Feb 12026
Jan 31

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Native plants for zone 8b in Louisiana

503 plants native to the lower 48 states, recorded in Louisiana, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. Each links to its USDA PLANTS profile.

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Waterproof, LA.

Soil in Waterproof, LA

The soil mapped at the center of ZIP 71375 is Tensas — clay, somewhat poorly drained.

TextureClayholds water and nutrients; slow to drain and warm up

pH5.3strongly acidic; most vegetables like 6.0–7.0

DrainageSomewhat poorly drainedconsider raised beds

Organic matter1.77%low — add compost

Hydrologic groupDwater soaks in very slowly

Farmland classprime farmlandUSDA classification

Map unit: Tensas-Sharkey clays, 0 to 3 percent slopes, gently undulating.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 71375; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Waterproof, LA

Summer high93 °Faverage high, July

Winter low36 °Faverage low, January

Hot days108days a year at 90 °F or more

Freezing nights33nights a year at 32 °F or less

Growing degree days6,196base 50 °F — the season’s usable heat

Longest day14 h 14 mindaylight on June 21

Shortest day10 h 04 mindaylight on December 21

Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb

Precipitation59.7 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: St Joseph 3 N, LA (16 mi away); precipitation: Sicily Island 3.3 Wnw, LA (14 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

1 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

713268b

Clayton, LA · 8 mi

713668b

Saint Joseph, LA · 10 mi

713688b

Sicily Island, LA · 13 mi

Louisiana planting zones →

Questions about 71375

What planting zone is ZIP code 71375?

ZIP code 71375 (Waterproof, LA) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Waterproof, LA?

The median last spring frost (32 °F) near 71375 is March 13; after April 4 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, St Joseph 3 N station.

When is the first frost in Waterproof, LA?

The median first fall frost near 71375 is November 10, giving a median frost-free growing season of 242 days.

When should I plant tomatoes in 71375?

Start tomato seeds indoors around Jan 16 – Jan 30 and set transplants outside around Mar 20 – Apr 3, one to three weeks after the median last frost.

How much rain and snow does 71375 get?

About 59.7 inches of precipitation a year (NOAA 1991–2020 normals, Sicily Island 3.3 Wnw station).

How hot do summers get in Waterproof, LA?

The average high peaks at 93 °F in July, with about 108 days a year at 90 °F or more.

What kind of soil does 71375 have?

The USDA soil survey maps Tensas at the center of ZIP 71375: clay, somewhat poorly drained, pH about 5.3 (strongly acidic).

Did spring come early in Waterproof, LA in 2026?

Spring leaf-out near 71375 came on Jan 31 in 2026, about the same as the 1991–2020 average (Feb 1), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Waterproof, LA?

Short-day onions: the longest day near 71375 is 14 h 14 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.