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

Planting zone for 70528 — Delcambre, LA

ZIP code 70528 (Delcambre, Vermilion County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F. The median last spring frost is February 10 and the first fall frost December 11.

Where ZIP 70528 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 10

First frostDec 11

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 Delcambre, 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 Delcambre, LA

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostFebruary 10median — 50% chance of a later frost

Safe for tender plantsMarch 9only 10% chance of frost after

First fall frostDecember 11median — 10% chance by Nov 17

Growing season305 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 29 and returns around January 3.

From the NOAA station New Iberia Acadiana Airport, LA — 12 miles away, elevation 23 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 70528

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Dec 30 – Jan 13

SpinachSow outdoors · Dec 30 – Jan 20

Broccoli, cabbageStart indoors · Dec 2 – Dec 16

Broccoli, cabbageTransplant · Jan 20 – Feb 3

Onion setsPlant outdoors · Jan 13 – Jan 27

PotatoesPlant outdoors · Jan 20 – Feb 3

LettuceSow outdoors · Jan 13 – Jan 27

Carrots, beetsSow outdoors · Jan 20 – Feb 3

TomatoesStart indoors · Dec 16 – Dec 30

TomatoesTransplant · Feb 17 – Mar 3

Peppers, eggplantStart indoors · Dec 2 – Dec 16

Peppers, eggplantTransplant · Feb 24 – Mar 10

BeansSow outdoors · Feb 17 – Mar 3

Sweet cornSow outdoors · Feb 17 – Mar 3

Cucumbers, squashSow outdoors · Feb 17 – Mar 3

Fall lettuce, spinachSow outdoors · Oct 16 – Oct 30

GarlicPlant cloves · Nov 27 – Jan 1

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Feb 10) and first fall frost (Dec 11) 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 70528 came on Jan 11 — 13 days earlier than the 1991–2020 average (Jan 24).

average
Jan 242026
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 Delcambre, LA.

Soil in Delcambre, LA

The soil mapped at the center of ZIP 70528 is Lafitte — muck, very poorly drained.

TextureMucktop layer

DrainageVery poorly drainedconsider raised beds

Organic matter50%high

Hydrologic groupA/Ddrains fast once dried out; wet otherwise

Farmland classNot prime farmlandUSDA classification

Map unit: Lafitte association.

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 70528; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Delcambre, LA

Summer high93 °Faverage high, August

Winter low43 °Faverage low, January

Hot days90days a year at 90 °F or more

Freezing nights10nights a year at 32 °F or less

Growing degree days7,451base 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

Precipitation65.3 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 Iberia Acadiana Airport, LA (12 mi away); precipitation: Abbeville, LA (11 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

705139b

Avery Island, LA · 4 mi

705339b

Erath, LA · 4 mi

705609b

New Iberia, LA · 7 mi

705699a

Lydia, LA · 11 mi

705629b

New Iberia, LA · 12 mi

705119a

Abbeville, LA · 12 mi

705759a

Perry, LA · 13 mi

705929a

Youngsville, LA · 14 mi

Louisiana planting zones →

Questions about 70528

What planting zone is ZIP code 70528?

ZIP code 70528 (Delcambre, 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 Delcambre, LA?

The median last spring frost (32 °F) near 70528 is February 10; after March 9 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, New Iberia Acadiana Airport station.

When is the first frost in Delcambre, LA?

The median first fall frost near 70528 is December 11, giving a median frost-free growing season of 305 days.

When should I plant tomatoes in 70528?

Start tomato seeds indoors around Dec 16 – Dec 30 and set transplants outside around Feb 17 – Mar 3, one to three weeks after the median last frost.

How much rain and snow does 70528 get?

About 65.3 inches of precipitation a year (NOAA 1991–2020 normals, Abbeville station).

How hot do summers get in Delcambre, LA?

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

What kind of soil does 70528 have?

The USDA soil survey maps Lafitte at the center of ZIP 70528: muck, very poorly drained.

Did spring come early in Delcambre, LA in 2026?

Spring leaf-out near 70528 came on Jan 11 in 2026, 13 days earlier than the 1991–2020 average (Jan 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Delcambre, LA?

Short-day onions: the longest day near 70528 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 70528 change?

Yes. The 2012 USDA map put 70528 in zone 9a; the 2023 map puts it in zone 9b. The newer map uses 1991–2020 data and more weather stations.