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

Planting zone for 70783 — Ventress, LA

ZIP code 70783 (Ventress, Pointe Coupee County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is February 19 and the first fall frost December 5.

Where ZIP 70783 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.

Zone9a20 to 25 °F

Coldest night−6.7 to −3.9 °C

Last frostFeb 19

First frostDec 5

2012 zone9a

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 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Ventress, 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 Ventress, LA

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostFebruary 19median — 50% chance of a later frost

Safe for tender plantsMarch 14only 10% chance of frost after

First fall frostDecember 5median — 10% chance by Nov 15

Growing season292 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 31 and returns around December 29.

From the NOAA station New Roads 5 Ne, LA — 5 miles away, elevation 46 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 70783

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 8 – Jan 22

SpinachSow outdoors · Jan 8 – Jan 29

Broccoli, cabbageStart indoors · Dec 11 – Dec 25

Broccoli, cabbageTransplant · Jan 29 – Feb 12

Onion setsPlant outdoors · Jan 22 – Feb 5

PotatoesPlant outdoors · Jan 29 – Feb 12

LettuceSow outdoors · Jan 22 – Feb 5

Carrots, beetsSow outdoors · Jan 29 – Feb 12

TomatoesStart indoors · Dec 25 – Jan 8

TomatoesTransplant · Feb 26 – Mar 12

Peppers, eggplantStart indoors · Dec 11 – Dec 25

Peppers, eggplantTransplant · Mar 5 – Mar 19

BeansSow outdoors · Feb 26 – Mar 12

Sweet cornSow outdoors · Feb 26 – Mar 12

Cucumbers, squashSow outdoors · Feb 26 – Mar 12

Fall lettuce, spinachSow outdoors · Oct 10 – Oct 24

GarlicPlant cloves · Nov 21 – Dec 26

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Feb 19) and first fall frost (Dec 5) 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 70783 came on Jan 11 — 15 days earlier than the 1991–2020 average (Jan 26).

average
Jan 262026
Jan 11

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 9a in Louisiana

517 plants native to the lower 48 states, recorded in Louisiana, and rated by the USDA to survive 20 °F or colder — the bottom of zone 9a. 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 Ventress, LA.

Soil in Ventress, LA

The soil mapped at the center of ZIP 70783 is Sharkey — clay, poorly drained.

TextureClayholds water and nutrients; slow to drain and warm up

pH6.8neutral; most vegetables like 6.0–7.0

DrainagePoorly drainedconsider raised beds

Organic matter2.25%moderate

Hydrologic groupDwater soaks in very slowly

Farmland classprime farmlandUSDA classification

Map unit: Sharkey-Tunica complex, 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 70783; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Ventress, LA

Summer high92 °Faverage high, July

Winter low42 °Faverage low, January

Hot days90days a year at 90 °F or more

Freezing nights19nights a year at 32 °F or less

Growing degree days7,127base 50 °F — the season’s usable heat

Longest day14 h 08 mindaylight on June 21

Shortest day10 h 10 mindaylight on December 21

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

Precipitation58.5 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: New Roads 5 Ne, LA (5 mi away); precipitation: New Roads 5 Ne, LA (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9a.

Erwinville, LA · 7 mi

707559a

Livonia, LA · 8 mi

Louisiana planting zones →

Questions about 70783

What planting zone is ZIP code 70783?

ZIP code 70783 (Ventress, LA) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

When is the last frost in Ventress, LA?

The median last spring frost (32 °F) near 70783 is February 19; after March 14 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, New Roads 5 Ne station.

When is the first frost in Ventress, LA?

The median first fall frost near 70783 is December 5, giving a median frost-free growing season of 292 days.

When should I plant tomatoes in 70783?

Start tomato seeds indoors around Dec 25 – Jan 8 and set transplants outside around Feb 26 – Mar 12, one to three weeks after the median last frost.

How much rain and snow does 70783 get?

About 58.5 inches of precipitation a year (NOAA 1991–2020 normals, New Roads 5 Ne station).

How hot do summers get in Ventress, LA?

The average high peaks at 92 °F in July, with about 90 days a year at 90 °F or more.

What kind of soil does 70783 have?

The USDA soil survey maps Sharkey at the center of ZIP 70783: clay, poorly drained, pH about 6.8 (neutral).

Did spring come early in Ventress, LA in 2026?

Spring leaf-out near 70783 came on Jan 11 in 2026, 15 days earlier than the 1991–2020 average (Jan 26), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Ventress, LA?

Short-day onions: the longest day near 70783 is 14 h 08 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.