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

Planting zone for 72519 — Calico Rock, AR

ZIP code 72519 (Calico Rock, Izard County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is April 14 and the first fall frost October 28.

Where ZIP 72519 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 frostApr 14
First frostOct 28
2012 zone7a

Was 7a 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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Calico Rock, 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 Calico Rock, AR

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 14median — 50% chance of a later frost
Safe for tender plantsApril 29only 10% chance of frost after
First fall frostOctober 28median — 10% chance by Oct 12
Growing season196 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 1 and returns around November 5.

From the NOAA station Calico Rock 2 Wsw, AR — 2 miles away, elevation 351 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 72519

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 3 – Mar 17
SpinachSow outdoors · Mar 3 – Mar 24
Broccoli, cabbageStart indoors · Feb 3 – Feb 17
Broccoli, cabbageTransplant · Mar 24 – Apr 7
Onion setsPlant outdoors · Mar 17 – Mar 31
PotatoesPlant outdoors · Mar 24 – Apr 7
LettuceSow outdoors · Mar 17 – Mar 31
Carrots, beetsSow outdoors · Mar 24 – Apr 7
TomatoesStart indoors · Feb 17 – Mar 3
TomatoesTransplant · Apr 21 – May 5
Peppers, eggplantStart indoors · Feb 3 – Feb 17
Peppers, eggplantTransplant · Apr 28 – May 12
BeansSow outdoors · Apr 21 – May 5
Sweet cornSow outdoors · Apr 21 – May 5
Cucumbers, squashSow outdoors · Apr 21 – May 5
Fall lettuce, spinachSow outdoors · Sep 2 – Sep 16
GarlicPlant cloves · Oct 14 – Nov 18
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 14) and first fall frost (Oct 28) 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 72519 came on Feb 18 — 11 days earlier than the 1991–2020 average (Mar 1).

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.

Trees 70

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Fbald cypress130 ft · blooms mid spring · medium shade tolerance · to −18 °Fbitternut hickory75 ft · blooms mid spring · high shade tolerance · to −47 °F

Shrubs 94

alternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °FAmerican hornbeam30 ft · blooms mid spring · low shade tolerance · to −34 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °F

Wildflowers & perennials 173

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican speedwell0.8 ft · blooms mid summer · low shade tolerance · to −38 °F

Grasses 145

alkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °FBailey's sedge2.1 ft · blooms late spring · low shade tolerance · to −33 °FBicknell's sedge3 ft · blooms late spring · low shade tolerance · to −38 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °F

Vines 14

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fcupseed30 ft · blooms late spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °F

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 Calico Rock, AR.

Soil in Calico Rock, AR

The soil mapped at the center of ZIP 72519 is Estate — stony sandy loam, well drained.

TextureStony sandy loamdrains and warms fast; dries out and needs more feeding
pH6.2slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.7%low — add compost
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Estate-Portia-Moko association, 20 to 40 percent slopes, stony.

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 72519; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Calico Rock, AR

Summer high88 °Faverage high, July
Winter low25 °Faverage low, January
Hot days45days a year at 90 °F or more
Freezing nights100nights a year at 32 °F or less
Growing degree days4,023base 50 °F — the season’s usable heat
Longest day14 h 37 mindaylight on June 21
Shortest day9 h 42 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation48.9 inper year, rain and melted snow
Snowfall7 inper year; 5 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 46 °F, low 25 °F 46°25° JanFebruary: average high 51 °F, low 27 °F 51°27° FebMarch: average high 60 °F, low 35 °F 60°35° MarApril: average high 70 °F, low 43 °F 70°43° AprMay: average high 76 °F, low 54 °F 76°54° MayJune: average high 84 °F, low 62 °F 84°62° JunJuly: average high 88 °F, low 65 °F 88°65° JulAugust: average high 88 °F, low 64 °F 88°64° AugSeptember: average high 81 °F, low 57 °F 81°57° SepOctober: average high 71 °F, low 45 °F 71°45° OctNovember: average high 59 °F, low 35 °F 59°35° NovDecember: average high 49 °F, low 28 °F 49°28° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 3.35 in precipitation, 2 in snowfall 3.4❄2 JanFebruary: 3.27 in precipitation, 1.9 in snowfall 3.3❄2 FebMarch: 4.75 in precipitation, 1.7 in snowfall 4.8❄2 MarApril: 5.47 in precipitation 5.5 AprMay: 5.13 in precipitation 5.1 MayJune: 3.61 in precipitation 3.6 JunJuly: 3.82 in precipitation 3.8 JulAugust: 3.63 in precipitation 3.6 AugSeptember: 3.76 in precipitation 3.8 SepOctober: 3.83 in precipitation 3.8 OctNovember: 4.34 in precipitation 4.3 NovDecember: 3.93 in precipitation, 1.1 in snowfall 3.9❄1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Calico Rock 2 Wsw, AR (2 mi away); precipitation: Calico Rock 2 Wsw, AR (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

2 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

726597a
Norfork, AR · 8 mi
726587b
Norfork, AR · 8 mi
725287b
Dolph, AR · 8 mi
725667b
Pineville, AR · 8 mi
725857b
Wideman, AR · 10 mi
725337b
Fifty Six, AR · 11 mi
725157b
Bexar, AR · 12 mi
725317a
Elizabeth, AR · 13 mi

Arkansas planting zones →

Questions about 72519

What planting zone is ZIP code 72519?

ZIP code 72519 (Calico Rock, 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 Calico Rock, AR?

The median last spring frost (32 °F) near 72519 is April 14; after April 29 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Calico Rock 2 Wsw station.

When is the first frost in Calico Rock, AR?

The median first fall frost near 72519 is October 28, giving a median frost-free growing season of 196 days.

When should I plant tomatoes in 72519?

Start tomato seeds indoors around Feb 17 – Mar 3 and set transplants outside around Apr 21 – May 5, one to three weeks after the median last frost.

How much rain and snow does 72519 get?

About 48.9 inches of precipitation a year and 7 inches of snowfall (NOAA 1991–2020 normals, Calico Rock 2 Wsw station).

How hot do summers get in Calico Rock, AR?

The average high peaks at 88 °F in July, with about 45 days a year at 90 °F or more.

What kind of soil does 72519 have?

The USDA soil survey maps Estate at the center of ZIP 72519: stony sandy loam, well drained, pH about 6.2 (slightly acidic).

Did spring come early in Calico Rock, AR in 2026?

Spring leaf-out near 72519 came on Feb 18 in 2026, 11 days earlier than the 1991–2020 average (Mar 1), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Calico Rock, AR?

Intermediate onions: the longest day near 72519 is 14 h 37 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 72519 change?

Yes. The 2012 USDA map put 72519 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.