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

Planting zone for 08311 — Cedarville, NJ

ZIP code 08311 (Cedarville, Cumberland County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is April 24 and the first fall frost October 23.

Where ZIP 08311 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 24
First frostOct 23
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 Cedarville, NJ…

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 Cedarville, NJ

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 24median — 50% chance of a later frost
Safe for tender plantsMay 10only 10% chance of frost after
First fall frostOctober 23median — 10% chance by Oct 10
Growing season181 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 10 and returns around November 2.

From the NOAA station Millville Municipal Airport, NJ — 8 miles away, elevation 69 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 08311

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 13 – Mar 27
SpinachSow outdoors · Mar 13 – Apr 3
Broccoli, cabbageStart indoors · Feb 13 – Feb 27
Broccoli, cabbageTransplant · Apr 3 – Apr 17
Onion setsPlant outdoors · Mar 27 – Apr 10
PotatoesPlant outdoors · Apr 3 – Apr 17
LettuceSow outdoors · Mar 27 – Apr 10
Carrots, beetsSow outdoors · Apr 3 – Apr 17
TomatoesStart indoors · Feb 27 – Mar 13
TomatoesTransplant · May 1 – May 15
Peppers, eggplantStart indoors · Feb 13 – Feb 27
Peppers, eggplantTransplant · May 8 – May 22
BeansSow outdoors · May 1 – May 15
Sweet cornSow outdoors · May 1 – May 15
Cucumbers, squashSow outdoors · May 1 – May 15
Fall lettuce, spinachSow outdoors · Aug 28 – Sep 11
GarlicPlant cloves · Oct 9 – Nov 13
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 24) and first fall frost (Oct 23) 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 08311 came on Mar 18 — about the same time as the 1991–2020 average (Mar 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 New Jersey

605 plants native to the lower 48 states, recorded in New Jersey, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. Each links to its USDA PLANTS profile.

Trees 81

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 119

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 204

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °FAmerican 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 °F

Grasses 176

American beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °FAtlantic mannagrass3 ft · blooms summer · low shade tolerance · to −8 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °F

Vines 10

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 °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 °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 Cedarville, NJ.

Soil in Cedarville, NJ

The soil mapped at the center of ZIP 08311 is Fallsington — mucky peat, poorly drained.

TextureMucky peattop layer
pH5.2strongly acidic; most vegetables like 6.0–7.0
DrainagePoorly drainedconsider raised beds
Organic matter68%high
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classFarmland of statewide importance, if drainedUSDA classification

Map unit: Fallsington sandy loams, 0 to 2 percent slopes, northern coastal plain.

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 08311; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cedarville, NJ

Summer high86 °Faverage high, July
Winter low24 °Faverage low, January
Hot days22days a year at 90 °F or more
Freezing nights108nights a year at 32 °F or less
Growing degree days3,550base 50 °F — the season’s usable heat
Longest day14 h 57 mindaylight on June 21
Shortest day9 h 24 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation43.4 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 42 °F, low 24 °F 42°24° JanFebruary: average high 45 °F, low 25 °F 45°25° FebMarch: average high 52 °F, low 31 °F 52°31° MarApril: average high 64 °F, low 41 °F 64°41° AprMay: average high 73 °F, low 50 °F 73°50° MayJune: average high 82 °F, low 60 °F 82°60° JunJuly: average high 86 °F, low 66 °F 86°66° JulAugust: average high 84 °F, low 64 °F 84°64° AugSeptember: average high 78 °F, low 57 °F 78°57° SepOctober: average high 67 °F, low 45 °F 67°45° OctNovember: average high 56 °F, low 35 °F 56°35° NovDecember: average high 47 °F, low 28 °F 47°28° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 3.13 in precipitation 3.1 JanFebruary: 2.63 in precipitation 2.6 FebMarch: 4.09 in precipitation 4.1 MarApril: 3.53 in precipitation 3.5 AprMay: 3.12 in precipitation 3.1 MayJune: 3.91 in precipitation 3.9 JunJuly: 4.26 in precipitation 4.3 JulAugust: 4.61 in precipitation 4.6 AugSeptember: 3.15 in precipitation 3.1 SepOctober: 3.82 in precipitation 3.8 OctNovember: 3.17 in precipitation 3.2 NovDecember: 3.95 in precipitation 4.0 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Millville Municipal Airport, NJ (8 mi away); precipitation: Millville Municipal Airport, NJ (8 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.

083457b
Newport, NJ · 4 mi
083207a
Fairton, NJ · 5 mi
083157b
Dividing Creek, NJ · 7 mi
083217b
Fortescue, NJ · 8 mi
083027b
Bridgeton, NJ · 8 mi
083497b
Port Norris, NJ · 9 mi
083327a
Millville, NJ · 10 mi
083237b
Greenwich, NJ · 10 mi

New Jersey planting zones →

Questions about 08311

What planting zone is ZIP code 08311?

ZIP code 08311 (Cedarville, NJ) 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 Cedarville, NJ?

The median last spring frost (32 °F) near 08311 is April 24; after May 10 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Millville Municipal Airport station.

When is the first frost in Cedarville, NJ?

The median first fall frost near 08311 is October 23, giving a median frost-free growing season of 181 days.

When should I plant tomatoes in 08311?

Start tomato seeds indoors around Feb 27 – Mar 13 and set transplants outside around May 1 – May 15, one to three weeks after the median last frost.

How much rain and snow does 08311 get?

About 43.4 inches of precipitation a year (NOAA 1991–2020 normals, Millville Municipal Airport station).

How hot do summers get in Cedarville, NJ?

The average high peaks at 86 °F in July, with about 22 days a year at 90 °F or more.

What kind of soil does 08311 have?

The USDA soil survey maps Fallsington at the center of ZIP 08311: mucky peat, poorly drained, pH about 5.2 (strongly acidic).

Did spring come early in Cedarville, NJ in 2026?

Spring leaf-out near 08311 came on Mar 18 in 2026, about the same as the 1991–2020 average (Mar 17), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cedarville, NJ?

Intermediate onions: the longest day near 08311 is 14 h 57 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 08311 change?

Yes. The 2012 USDA map put 08311 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.