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

Planting zone for 72718 — Cave Springs, AR

ZIP code 72718 (Cave Springs, Benton County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 12 and the first fall frost October 26.

Where ZIP 72718 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.

Zone7a0 to 5 °F

Coldest night−17.8 to −15 °C

Last frostApr 12

First frostOct 26

2012 zone6b

Was 6b 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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Cave Springs, 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 Cave Springs, AR

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 12median — 50% chance of a later frost

Safe for tender plantsApril 29only 10% chance of frost after

First fall frostOctober 26median — 10% chance by Oct 13

Growing season195 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 31 and returns around November 4.

From the NOAA station Bentonville 4 S, AR — 4 miles away, elevation 1,221 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 72718

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 1 – Mar 15

SpinachSow outdoors · Mar 1 – Mar 22

Broccoli, cabbageStart indoors · Feb 1 – Feb 15

Broccoli, cabbageTransplant · Mar 22 – Apr 5

Onion setsPlant outdoors · Mar 15 – Mar 29

PotatoesPlant outdoors · Mar 22 – Apr 5

LettuceSow outdoors · Mar 15 – Mar 29

Carrots, beetsSow outdoors · Mar 22 – Apr 5

TomatoesStart indoors · Feb 15 – Mar 1

TomatoesTransplant · Apr 19 – May 3

Peppers, eggplantStart indoors · Feb 1 – Feb 15

Peppers, eggplantTransplant · Apr 26 – May 10

BeansSow outdoors · Apr 19 – May 3

Sweet cornSow outdoors · Apr 19 – May 3

Cucumbers, squashSow outdoors · Apr 19 – May 3

Fall lettuce, spinachSow outdoors · Aug 31 – Sep 14

GarlicPlant cloves · Oct 12 – Nov 16

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 12) and first fall frost (Oct 26) 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 72718 came on Feb 15 — 16 days earlier than the 1991–2020 average (Mar 3).

average
Mar 32026
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 7a in Arkansas

501 plants native to the lower 48 states, recorded in Arkansas, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. 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 Cave Springs, AR.

Soil in Cave Springs, AR

The soil mapped at the center of ZIP 72718 is Tonti — gravelly silt loam, moderately well drained.

TextureGravelly silt loama good balance for most vegetables

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

DrainageModerately well drainednatural drainage class

Organic matter1.7%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Tonti gravelly silt loam, 3 to 8 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 72718; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cave Springs, AR

Summer high90 °Faverage high, August

Winter low24 °Faverage low, January

Hot days46days a year at 90 °F or more

Freezing nights101nights a year at 32 °F or less

Growing degree days4,260base 50 °F — the season’s usable heat

Longest day14 h 38 mindaylight on June 21

Shortest day9 h 41 mindaylight on December 21

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

Precipitation50.4 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: Bentonville 4 S, AR (4 mi away); precipitation: Bentonville 6.6 Ssw, AR (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

727137a

Bentonville, AR · 4 mi

727287a

Elm Springs, AR · 4 mi

727587a

Rogers, AR · 5 mi

727627a

Springdale, AR · 6 mi

Springdale, AR · 7 mi

727667a

Springdale, AR · 7 mi

Arkansas planting zones →

Questions about 72718

What planting zone is ZIP code 72718?

ZIP code 72718 (Cave Springs, AR) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Cave Springs, AR?

The median last spring frost (32 °F) near 72718 is April 12; after April 29 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Bentonville 4 S station.

When is the first frost in Cave Springs, AR?

The median first fall frost near 72718 is October 26, giving a median frost-free growing season of 195 days.

When should I plant tomatoes in 72718?

Start tomato seeds indoors around Feb 15 – Mar 1 and set transplants outside around Apr 19 – May 3, one to three weeks after the median last frost.

How much rain and snow does 72718 get?

About 50.4 inches of precipitation a year (NOAA 1991–2020 normals, Bentonville 6.6 Ssw station).

How hot do summers get in Cave Springs, AR?

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

What kind of soil does 72718 have?

The USDA soil survey maps Tonti at the center of ZIP 72718: gravelly silt loam, moderately well drained, pH about 5.0 (strongly acidic).

Did spring come early in Cave Springs, AR in 2026?

Spring leaf-out near 72718 came on Feb 15 in 2026, 16 days earlier than the 1991–2020 average (Mar 3), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cave Springs, AR?

Intermediate onions: the longest day near 72718 is 14 h 38 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 72718 change?

Yes. The 2012 USDA map put 72718 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.