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

Planting zone for 71480 — Urania, LA

ZIP code 71480 (Urania, La Salle County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 19 and the first fall frost November 12.

Where ZIP 71480 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 19

First frostNov 12

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 Urania, 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 Urania, LA

JanFebMarAprMayJunJulAugSepOctNovDec

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

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

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

First fall frostNovember 12median — 10% chance by Oct 29

Growing season238 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 1 and returns around November 25.

From the NOAA station Jena, LA — 16 miles away, elevation 144 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 71480

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 5 – Feb 19

SpinachSow outdoors · Feb 5 – Feb 26

Broccoli, cabbageStart indoors · Jan 8 – Jan 22

Broccoli, cabbageTransplant · Feb 26 – Mar 12

Onion setsPlant outdoors · Feb 19 – Mar 5

PotatoesPlant outdoors · Feb 26 – Mar 12

LettuceSow outdoors · Feb 19 – Mar 5

Carrots, beetsSow outdoors · Feb 26 – Mar 12

TomatoesStart indoors · Jan 22 – Feb 5

TomatoesTransplant · Mar 26 – Apr 9

Peppers, eggplantStart indoors · Jan 8 – Jan 22

Peppers, eggplantTransplant · Apr 2 – Apr 16

BeansSow outdoors · Mar 26 – Apr 9

Sweet cornSow outdoors · Mar 26 – Apr 9

Cucumbers, squashSow outdoors · Mar 26 – Apr 9

Fall lettuce, spinachSow outdoors · Sep 17 – Oct 1

GarlicPlant cloves · Oct 29 – Dec 3

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 19) and first fall frost (Nov 12) 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 71480 came on Jan 31 — about the same time as the 1991–2020 average (Jan 31).

average
Jan 312026
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 Urania, LA.

Soil in Urania, LA

The soil mapped at the center of ZIP 71480 is Shatta — very fine sandy loam, moderately well drained.

TextureVery fine sandy loamdrains and warms fast; dries out and needs more feeding

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

DrainageModerately well drainednatural drainage class

Organic matter1.75%low — add compost

Hydrologic groupC/Dslow when drained; wet otherwise

Farmland classprime farmlandUSDA classification

Map unit: Shatta very fine sandy loam, 1 to 5 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 71480; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Urania, LA

Summer high92 °Faverage high, August

Winter low36 °Faverage low, January

Hot days83days a year at 90 °F or more

Freezing nights42nights a year at 32 °F or less

Growing degree days6,033base 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

Precipitation57.7 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: Jena, LA (16 mi away); precipitation: Olla, LA (2 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.

Georgetown, LA · 14 mi

714738b

Sikes, LA · 16 mi

Louisiana planting zones →

Questions about 71480

What planting zone is ZIP code 71480?

ZIP code 71480 (Urania, 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 Urania, LA?

The median last spring frost (32 °F) near 71480 is March 19; after April 9 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Jena station.

When is the first frost in Urania, LA?

The median first fall frost near 71480 is November 12, giving a median frost-free growing season of 238 days.

When should I plant tomatoes in 71480?

Start tomato seeds indoors around Jan 22 – Feb 5 and set transplants outside around Mar 26 – Apr 9, one to three weeks after the median last frost.

How much rain and snow does 71480 get?

About 57.7 inches of precipitation a year (NOAA 1991–2020 normals, Olla station).

How hot do summers get in Urania, LA?

The average high peaks at 92 °F in August, with about 83 days a year at 90 °F or more.

What kind of soil does 71480 have?

The USDA soil survey maps Shatta at the center of ZIP 71480: very fine sandy loam, moderately well drained, pH about 5.3 (strongly acidic).

Did spring come early in Urania, LA in 2026?

Spring leaf-out near 71480 came on Jan 31 in 2026, about the same as the 1991–2020 average (Jan 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Urania, LA?

Short-day onions: the longest day near 71480 is 14 h 14 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.