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

Planting zone for 39470 — Poplarville, MS

ZIP code 39470 (Poplarville, Pearl River County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 10 and the first fall frost November 21.

Where ZIP 39470 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 frostMar 10

First frostNov 21

2012 zone8b

Was 8b 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 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Poplarville, MS…

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 Poplarville, MS

JanFebMarAprMayJunJulAugSepOctNovDec

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

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

Safe for tender plantsApril 1only 10% chance of frost after

First fall frostNovember 21median — 10% chance by Nov 2

Growing season257 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 24 and returns around December 3.

From the NOAA station Poplarville Exp Stn, MS — 2 miles away, elevation 312 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 39470

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 27 – Feb 10

SpinachSow outdoors · Jan 27 – Feb 17

Broccoli, cabbageStart indoors · Dec 30 – Jan 13

Broccoli, cabbageTransplant · Feb 17 – Mar 3

Onion setsPlant outdoors · Feb 10 – Feb 24

PotatoesPlant outdoors · Feb 17 – Mar 3

LettuceSow outdoors · Feb 10 – Feb 24

Carrots, beetsSow outdoors · Feb 17 – Mar 3

TomatoesStart indoors · Jan 13 – Jan 27

TomatoesTransplant · Mar 17 – Mar 31

Peppers, eggplantStart indoors · Dec 30 – Jan 13

Peppers, eggplantTransplant · Mar 24 – Apr 7

BeansSow outdoors · Mar 17 – Mar 31

Sweet cornSow outdoors · Mar 17 – Mar 31

Cucumbers, squashSow outdoors · Mar 17 – Mar 31

Fall lettuce, spinachSow outdoors · Sep 26 – Oct 10

GarlicPlant cloves · Nov 7 – Dec 12

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 10) and first fall frost (Nov 21) 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 39470 came on Jan 11 — 17 days earlier than the 1991–2020 average (Jan 28).

average
Jan 282026
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 Mississippi

541 plants native to the lower 48 states, recorded in Mississippi, 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 Poplarville, MS.

Soil in Poplarville, MS

The soil mapped at the center of ZIP 39470 is Dorovan — muck, very poorly drained.

TextureMucktop layer

DrainageVery poorly drainedconsider raised beds

Organic matter50%high

Hydrologic groupB/Dmoderate when drained; wet otherwise

Farmland classNot prime farmlandUSDA classification

Map unit: Dorovan-Croatan 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 39470; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Poplarville, MS

Summer high91 °Faverage high, July

Winter low39 °Faverage low, January

Hot days84days a year at 90 °F or more

Freezing nights26nights a year at 32 °F or less

Growing degree days6,256base 50 °F — the season’s usable heat

Longest day14 h 09 mindaylight on June 21

Shortest day10 h 09 mindaylight on December 21

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

Precipitation65 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: Poplarville Exp Stn, MS (2 mi away); precipitation: Poplarville Exp Stn, MS (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.

Lumberton, MS · 14 mi

704299a

Bogalusa, LA · 17 mi

394639a

Nicholson, MS · 18 mi

Mississippi planting zones →

Questions about 39470

What planting zone is ZIP code 39470?

ZIP code 39470 (Poplarville, MS) 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 Poplarville, MS?

The median last spring frost (32 °F) near 39470 is March 10; after April 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Poplarville Exp Stn station.

When is the first frost in Poplarville, MS?

The median first fall frost near 39470 is November 21, giving a median frost-free growing season of 257 days.

When should I plant tomatoes in 39470?

Start tomato seeds indoors around Jan 13 – Jan 27 and set transplants outside around Mar 17 – Mar 31, one to three weeks after the median last frost.

How much rain and snow does 39470 get?

About 65 inches of precipitation a year (NOAA 1991–2020 normals, Poplarville Exp Stn station).

How hot do summers get in Poplarville, MS?

The average high peaks at 91 °F in July, with about 84 days a year at 90 °F or more.

What kind of soil does 39470 have?

The USDA soil survey maps Dorovan at the center of ZIP 39470: muck, very poorly drained.

Did spring come early in Poplarville, MS in 2026?

Spring leaf-out near 39470 came on Jan 11 in 2026, 17 days earlier than the 1991–2020 average (Jan 28), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Poplarville, MS?

Short-day onions: the longest day near 39470 is 14 h 09 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 39470 change?

Yes. The 2012 USDA map put 39470 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.