Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 30, 2026

Planting zone for 38603 — Ashland, MS

ZIP code 38603 (Ashland, Benton County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 29 and the first fall frost November 6.

Where ZIP 38603 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.

Zone7b5 to 10 °F

Coldest night−15 to −12.2 °C

Last frostMar 29

First frostNov 6

2012 zone7b

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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Ashland, 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 Ashland, MS

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 29median — 50% chance of a later frost

Safe for tender plantsApril 15only 10% chance of frost after

First fall frostNovember 6median — 10% chance by Oct 22

Growing season224 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 11 and returns around November 20.

From the NOAA station Ashland, MS — within 1 mile, elevation 604 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 38603

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 15 – Mar 1

SpinachSow outdoors · Feb 15 – Mar 8

Broccoli, cabbageStart indoors · Jan 18 – Feb 1

Broccoli, cabbageTransplant · Mar 8 – Mar 22

Onion setsPlant outdoors · Mar 1 – Mar 15

PotatoesPlant outdoors · Mar 8 – Mar 22

LettuceSow outdoors · Mar 1 – Mar 15

Carrots, beetsSow outdoors · Mar 8 – Mar 22

TomatoesStart indoors · Feb 1 – Feb 15

TomatoesTransplant · Apr 5 – Apr 19

Peppers, eggplantStart indoors · Jan 18 – Feb 1

Peppers, eggplantTransplant · Apr 12 – Apr 26

BeansSow outdoors · Apr 5 – Apr 19

Sweet cornSow outdoors · Apr 5 – Apr 19

Cucumbers, squashSow outdoors · Apr 5 – Apr 19

Fall lettuce, spinachSow outdoors · Sep 11 – Sep 25

GarlicPlant cloves · Oct 23 – Nov 27

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 29) and first fall frost (Nov 6) 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 38603 came on Feb 17 — about the same time as the 1991–2020 average (Feb 19).

average
Feb 192026
Feb 17

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 7b in Mississippi

488 plants native to the lower 48 states, recorded in Mississippi, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. 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 Ashland, MS.

Soil in Ashland, MS

The soil mapped at the center of ZIP 38603 is Lexington — silt loam, well drained.

TextureSilt loama good balance for most vegetables

pH6.3slightly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.25%low — add compost

Hydrologic groupBwater soaks in moderately

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Lexington silt loam, 5 to 8 percent slopes, moderately eroded.

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 38603; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Ashland, MS

Summer high89 °Faverage high, July

Winter low29 °Faverage low, January

Hot days52days a year at 90 °F or more

Freezing nights71nights a year at 32 °F or less

Growing degree days4,831base 50 °F — the season’s usable heat

Longest day14 h 30 mindaylight on June 21

Shortest day9 h 49 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation57 inper year, rain and melted snow

Snowfall2 inper year; 1 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Ashland, MS (within 1 mile); precipitation: Ashland, MS (within 1 mile). 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.

386297b

Falkner, MS · 9 mi

386477b

Michigan City, MS · 9 mi

386427b

Lamar, MS · 12 mi

386337b

Hickory Flat, MS · 14 mi

386747b

Tiplersville, MS · 14 mi

380397b

Grand Junction, TN · 15 mi

386108a

Blue Mountain, MS · 15 mi

386637b

Ripley, MS · 16 mi

Mississippi planting zones →

Questions about 38603

What planting zone is ZIP code 38603?

ZIP code 38603 (Ashland, MS) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Ashland, MS?

The median last spring frost (32 °F) near 38603 is March 29; after April 15 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Ashland station.

When is the first frost in Ashland, MS?

The median first fall frost near 38603 is November 6, giving a median frost-free growing season of 224 days.

When should I plant tomatoes in 38603?

Start tomato seeds indoors around Feb 1 – Feb 15 and set transplants outside around Apr 5 – Apr 19, one to three weeks after the median last frost.

How much rain and snow does 38603 get?

About 57 inches of precipitation a year and 2 inches of snowfall (NOAA 1991–2020 normals, Ashland station).

How hot do summers get in Ashland, MS?

The average high peaks at 89 °F in July, with about 52 days a year at 90 °F or more.

What kind of soil does 38603 have?

The USDA soil survey maps Lexington at the center of ZIP 38603: silt loam, well drained, pH about 6.3 (slightly acidic).

Did spring come early in Ashland, MS in 2026?

Spring leaf-out near 38603 came on Feb 17 in 2026, about the same as the 1991–2020 average (Feb 19), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Ashland, MS?

Intermediate onions: the longest day near 38603 is 14 h 30 min, so day-neutral types bulb best; long-day varieties may not bulb fully.