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

Planting zone for 43023 — Granville, OH

ZIP code 43023 (Granville, Licking County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 22 and the first fall frost October 18.

Where ZIP 43023 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.

Zone6a−10 to −5 °F
Coldest night−23.3 to −20.6 °C
Last frostApr 22
First frostOct 18
2012 zone6a

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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Granville, OH…

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 Granville, OH

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 22median — 50% chance of a later frost
Safe for tender plantsMay 10only 10% chance of frost after
First fall frostOctober 18median — 10% chance by Oct 5
Growing season178 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 8 and returns around October 31.

From the NOAA station Newark Heath Airport, OH — 5 miles away, elevation 883 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 43023

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 11 – Mar 25
SpinachSow outdoors · Mar 11 – Apr 1
Broccoli, cabbageStart indoors · Feb 11 – Feb 25
Broccoli, cabbageTransplant · Apr 1 – Apr 15
Onion setsPlant outdoors · Mar 25 – Apr 8
PotatoesPlant outdoors · Apr 1 – Apr 15
LettuceSow outdoors · Mar 25 – Apr 8
Carrots, beetsSow outdoors · Apr 1 – Apr 15
TomatoesStart indoors · Feb 25 – Mar 11
TomatoesTransplant · Apr 29 – May 13
Peppers, eggplantStart indoors · Feb 11 – Feb 25
Peppers, eggplantTransplant · May 6 – May 20
BeansSow outdoors · Apr 29 – May 13
Sweet cornSow outdoors · Apr 29 – May 13
Cucumbers, squashSow outdoors · Apr 29 – May 13
Fall lettuce, spinachSow outdoors · Aug 23 – Sep 6
GarlicPlant cloves · Oct 4 – Nov 8
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 22) and first fall frost (Oct 18) 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 43023 came on Mar 10 — 19 days earlier than the 1991–2020 average (Mar 29).

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 6a in Ohio

565 plants native to the lower 48 states, recorded in Ohio, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. 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 chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 109

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °F

Wildflowers & perennials 202

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °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 °FAmerican vetch1.3 ft · blooms late spring · high shade tolerance · to −38 °F

Grasses 164

American beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °FBebb's sedge3 ft · blooms late spring · low shade tolerance · to −38 °FBicknell's sedge3 ft · blooms late spring · low shade tolerance · to −38 °F

Vines 8

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Fsummer grape30 ft · blooms late spring · low shade tolerance · to −23 °Ftrumpet creeper2 ft · blooms summer · high shade tolerance · to −13 °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 Granville, OH.

Soil in Granville, OH

The soil mapped at the center of ZIP 43023 is Sleeth — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH6.5neutral; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter2%moderate
Hydrologic groupB/Dmoderate when drained; wet otherwise
Farmland classPrime farmland if drainedUSDA classification

Map unit: Sleeth silt loam, Southern Ohio Till Plain, 0 to 2 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 43023; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Granville, OH

Summer high86 °Faverage high, July
Winter low21 °Faverage low, January
Hot days15days a year at 90 °F or more
Freezing nights122nights a year at 32 °F or less
Growing degree days3,470base 50 °F — the season’s usable heat
Longest day15 h 01 mindaylight on June 21
Shortest day9 h 19 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation42.7 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 39 °F, low 21 °F 39°21° JanFebruary: average high 42 °F, low 23 °F 42°23° FebMarch: average high 52 °F, low 31 °F 52°31° MarApril: average high 65 °F, low 41 °F 65°41° AprMay: average high 75 °F, low 51 °F 75°51° MayJune: average high 83 °F, low 60 °F 83°60° JunJuly: average high 86 °F, low 63 °F 86°63° JulAugust: average high 84 °F, low 61 °F 84°61° AugSeptember: average high 79 °F, low 53 °F 79°53° SepOctober: average high 67 °F, low 42 °F 67°42° OctNovember: average high 54 °F, low 33 °F 54°33° NovDecember: average high 43 °F, low 27 °F 43°27° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 3.17 in precipitation 3.2 JanFebruary: 2.50 in precipitation 2.5 FebMarch: 3.57 in precipitation 3.6 MarApril: 4.06 in precipitation 4.1 AprMay: 4.11 in precipitation 4.1 MayJune: 4.51 in precipitation 4.5 JunJuly: 4.39 in precipitation 4.4 JulAugust: 3.84 in precipitation 3.8 AugSeptember: 3.39 in precipitation 3.4 SepOctober: 3.00 in precipitation 3.0 OctNovember: 3.00 in precipitation 3.0 NovDecember: 3.16 in precipitation 3.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Newark Heath Airport, OH (5 mi away); precipitation: Granville 4.0 N, OH (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6a.

430936a
Newark, OH · 3 mi
430016a
Alexandria, OH · 5 mi
430586a
Newark, OH · 7 mi
430256a
Hebron, OH · 7 mi
430556a
Newark, OH · 8 mi
430336a
Kirkersville, OH · 9 mi
430316a
Johnstown, OH · 9 mi
430626a
Pataskala, OH · 9 mi

Ohio planting zones →

Questions about 43023

What planting zone is ZIP code 43023?

ZIP code 43023 (Granville, OH) is in USDA hardiness zone 6a on the 2023 map: the coldest night of an average winter reaches −10 to −5 °F (−23.3 to −20.6 °C).

When is the last frost in Granville, OH?

The median last spring frost (32 °F) near 43023 is April 22; after May 10 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Newark Heath Airport station.

When is the first frost in Granville, OH?

The median first fall frost near 43023 is October 18, giving a median frost-free growing season of 178 days.

When should I plant tomatoes in 43023?

Start tomato seeds indoors around Feb 25 – Mar 11 and set transplants outside around Apr 29 – May 13, one to three weeks after the median last frost.

How much rain and snow does 43023 get?

About 42.7 inches of precipitation a year (NOAA 1991–2020 normals, Granville 4.0 N station).

How hot do summers get in Granville, OH?

The average high peaks at 86 °F in July, with about 15 days a year at 90 °F or more.

What kind of soil does 43023 have?

The USDA soil survey maps Sleeth at the center of ZIP 43023: silt loam, somewhat poorly drained, pH about 6.5 (neutral).

Did spring come early in Granville, OH in 2026?

Spring leaf-out near 43023 came on Mar 10 in 2026, 19 days earlier than the 1991–2020 average (Mar 29), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Granville, OH?

Long-day onions: the longest day near 43023 is 15 h 01 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).