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

Planting zone for 70092 — Violet, LA

ZIP code 70092 (Violet, St. Bernard County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F. The median last spring frost is February 4 and the first fall frost December 15.

Where ZIP 70092 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.

Zone9b25 to 30 °F

Coldest night−3.9 to −1.1 °C

Last frostFeb 4

First frostDec 15

2012 zone9a

Was 9a on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 9b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Violet, 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 Violet, LA

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostFebruary 4median — 50% chance of a later frost

Safe for tender plantsMarch 6only 10% chance of frost after

First fall frostDecember 15median — 10% chance by Nov 23

Growing season312 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 21 and returns around December 30.

From the NOAA station St Bernard, LA — 4 miles away, elevation 7 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 70092

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Dec 24 – Jan 7

SpinachSow outdoors · Dec 24 – Jan 14

Broccoli, cabbageStart indoors · Nov 26 – Dec 10

Broccoli, cabbageTransplant · Jan 14 – Jan 28

Onion setsPlant outdoors · Jan 7 – Jan 21

PotatoesPlant outdoors · Jan 14 – Jan 28

LettuceSow outdoors · Jan 7 – Jan 21

Carrots, beetsSow outdoors · Jan 14 – Jan 28

TomatoesStart indoors · Dec 10 – Dec 24

TomatoesTransplant · Feb 11 – Feb 25

Peppers, eggplantStart indoors · Nov 26 – Dec 10

Peppers, eggplantTransplant · Feb 18 – Mar 4

BeansSow outdoors · Feb 11 – Feb 25

Sweet cornSow outdoors · Feb 11 – Feb 25

Cucumbers, squashSow outdoors · Feb 11 – Feb 25

Fall lettuce, spinachSow outdoors · Oct 20 – Nov 3

GarlicPlant cloves · Dec 1 – Jan 5

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Feb 4) and first fall frost (Dec 15) 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 70092 came on Jan 11 — 12 days earlier than the 1991–2020 average (Jan 23).

average
Jan 232026
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 9b in Louisiana

519 plants native to the lower 48 states, recorded in Louisiana, and rated by the USDA to survive 25 °F or colder — the bottom of zone 9b. 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 Violet, LA.

Soil in Violet, LA

The soil mapped at the center of ZIP 70092 is Cancienne — silty clay loam, somewhat poorly drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up

pH5.7moderately acidic; most vegetables like 6.0–7.0

DrainageSomewhat poorly drainedconsider raised beds

Organic matter2.25%moderate

Hydrologic groupCwater soaks in slowly

Farmland classprime farmlandUSDA classification

Map unit: Cancienne silty clay loam, 0 to 1 percent slopes.

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 70092; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Violet, LA

Summer high89 °Faverage high, July

Winter low44 °Faverage low, January

Hot days55days a year at 90 °F or more

Freezing nights8nights a year at 32 °F or less

Growing degree days6,979base 50 °F — the season’s usable heat

Longest day14 h 04 mindaylight on June 21

Shortest day10 h 13 mindaylight on December 21

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

Precipitation70.4 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 Bernard, LA (4 mi away); precipitation: Chalmette, LA (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9b.

700759b

Meraux, LA · 2 mi

701319b

New Orleans, LA · 4 mi

Belle Chasse, LA · 6 mi

New Orleans, LA · 9 mi

Louisiana planting zones →

Questions about 70092

What planting zone is ZIP code 70092?

ZIP code 70092 (Violet, LA) is in USDA hardiness zone 9b on the 2023 map: the coldest night of an average winter reaches 25 to 30 °F (−3.9 to −1.1 °C).

When is the last frost in Violet, LA?

The median last spring frost (32 °F) near 70092 is February 4; after March 6 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, St Bernard station.

When is the first frost in Violet, LA?

The median first fall frost near 70092 is December 15, giving a median frost-free growing season of 312 days.

When should I plant tomatoes in 70092?

Start tomato seeds indoors around Dec 10 – Dec 24 and set transplants outside around Feb 11 – Feb 25, one to three weeks after the median last frost.

How much rain and snow does 70092 get?

About 70.4 inches of precipitation a year (NOAA 1991–2020 normals, Chalmette station).

How hot do summers get in Violet, LA?

The average high peaks at 89 °F in July, with about 55 days a year at 90 °F or more.

What kind of soil does 70092 have?

The USDA soil survey maps Cancienne at the center of ZIP 70092: silty clay loam, somewhat poorly drained, pH about 5.7 (moderately acidic).

Did spring come early in Violet, LA in 2026?

Spring leaf-out near 70092 came on Jan 11 in 2026, 12 days earlier than the 1991–2020 average (Jan 23), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Violet, LA?

Short-day onions: the longest day near 70092 is 14 h 04 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 70092 change?

Yes. The 2012 USDA map put 70092 in zone 9a; the 2023 map puts it in zone 9b. The newer map uses 1991–2020 data and more weather stations.