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

Planting zone for 72837 — Dover, AR

ZIP code 72837 (Dover, Pope County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 25 and the first fall frost November 10.

Where ZIP 72837 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 25

First frostNov 10

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 Dover, AR…

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 Dover, AR

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 25median — 50% chance of a later frost

Safe for tender plantsApril 12only 10% chance of frost after

First fall frostNovember 10median — 10% chance by Oct 28

Growing season232 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 12 and returns around November 23.

From the NOAA station Clarksville 6 Ne, AR — 17 miles away, elevation 850 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 72837

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 11 – Feb 25

SpinachSow outdoors · Feb 11 – Mar 4

Broccoli, cabbageStart indoors · Jan 14 – Jan 28

Broccoli, cabbageTransplant · Mar 4 – Mar 18

Onion setsPlant outdoors · Feb 25 – Mar 11

PotatoesPlant outdoors · Mar 4 – Mar 18

LettuceSow outdoors · Feb 25 – Mar 11

Carrots, beetsSow outdoors · Mar 4 – Mar 18

TomatoesStart indoors · Jan 28 – Feb 11

TomatoesTransplant · Apr 1 – Apr 15

Peppers, eggplantStart indoors · Jan 14 – Jan 28

Peppers, eggplantTransplant · Apr 8 – Apr 22

BeansSow outdoors · Apr 1 – Apr 15

Sweet cornSow outdoors · Apr 1 – Apr 15

Cucumbers, squashSow outdoors · Apr 1 – Apr 15

Fall lettuce, spinachSow outdoors · Sep 15 – Sep 29

GarlicPlant cloves · Oct 27 – Dec 1

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 25) and first fall frost (Nov 10) 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 72837 came on Feb 15 — 13 days earlier than the 1991–2020 average (Feb 28).

average
Feb 282026
Feb 15

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 Arkansas

505 plants native to the lower 48 states, recorded in Arkansas, 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 Dover, AR.

Soil in Dover, AR

The soil mapped at the center of ZIP 72837 is Nella — gravelly fine sandy loam, well drained.

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

pH5.0strongly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.75%low — add compost

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Nella-Mountainburg association, steep.

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 72837; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Dover, AR

Summer high90 °Faverage high, July

Winter low29 °Faverage low, January

Hot days46days a year at 90 °F or more

Freezing nights67nights a year at 32 °F or less

Growing degree days4,862base 50 °F — the season’s usable heat

Longest day14 h 34 mindaylight on June 21

Shortest day9 h 45 mindaylight on December 21

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

Precipitation52.8 inper year, rain and melted snow

Snowfall2 inper year; 2 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: Clarksville 6 Ne, AR (17 mi away); precipitation: Long Pool, AR (5 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.

728128a

Russellville, AR · 8 mi

726867b

Witts Springs, AR · 10 mi

728397b

Hagarville, AR · 11 mi

Russellville, AR · 14 mi

720807b

Jerusalem, AR · 16 mi

Arkansas planting zones →

Questions about 72837

What planting zone is ZIP code 72837?

ZIP code 72837 (Dover, AR) 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 Dover, AR?

The median last spring frost (32 °F) near 72837 is March 25; after April 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Clarksville 6 Ne station.

When is the first frost in Dover, AR?

The median first fall frost near 72837 is November 10, giving a median frost-free growing season of 232 days.

When should I plant tomatoes in 72837?

Start tomato seeds indoors around Jan 28 – Feb 11 and set transplants outside around Apr 1 – Apr 15, one to three weeks after the median last frost.

How much rain and snow does 72837 get?

About 52.8 inches of precipitation a year and 2 inches of snowfall (NOAA 1991–2020 normals, Long Pool station).

How hot do summers get in Dover, AR?

The average high peaks at 90 °F in July, with about 46 days a year at 90 °F or more.

What kind of soil does 72837 have?

The USDA soil survey maps Nella at the center of ZIP 72837: gravelly fine sandy loam, well drained, pH about 5.0 (strongly acidic).

Did spring come early in Dover, AR in 2026?

Spring leaf-out near 72837 came on Feb 15 in 2026, 13 days earlier than the 1991–2020 average (Feb 28), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Dover, AR?

Intermediate onions: the longest day near 72837 is 14 h 34 min, so day-neutral types bulb best; long-day varieties may not bulb fully.