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

Planting zone for 97355 — Lebanon, OR

ZIP code 97355 (Lebanon, Linn County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 14 and the first fall frost November 18.

Where ZIP 97355 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.

Zone8b15 to 20 °F
Coldest night−9.4 to −6.7 °C
Last frostMar 14
First frostNov 18
2012 zone8b

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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Lebanon, OR…

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 Lebanon, OR

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 14median — 50% chance of a later frost
Safe for tender plantsApril 14only 10% chance of frost after
First fall frostNovember 18median — 10% chance by Oct 27
Growing season248 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 15 and returns around December 10.

From the NOAA station Lebanon, OR — 4 miles away, elevation 331 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 97355

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 31 – Feb 14
SpinachSow outdoors · Jan 31 – Feb 21
Broccoli, cabbageStart indoors · Jan 3 – Jan 17
Broccoli, cabbageTransplant · Feb 21 – Mar 7
Onion setsPlant outdoors · Feb 14 – Feb 28
PotatoesPlant outdoors · Feb 21 – Mar 7
LettuceSow outdoors · Feb 14 – Feb 28
Carrots, beetsSow outdoors · Feb 21 – Mar 7
TomatoesStart indoors · Jan 17 – Jan 31
TomatoesTransplant · Mar 21 – Apr 4
Peppers, eggplantStart indoors · Jan 3 – Jan 17
Peppers, eggplantTransplant · Mar 28 – Apr 11
BeansSow outdoors · Mar 21 – Apr 4
Sweet cornSow outdoors · Mar 21 – Apr 4
Cucumbers, squashSow outdoors · Mar 21 – Apr 4
Fall lettuce, spinachSow outdoors · Sep 23 – Oct 7
GarlicPlant cloves · Nov 4 – Dec 9
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 14) and first fall frost (Nov 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 97355 came on Feb 22 — about the same time as the 1991–2020 average (Feb 21).

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 8b in Oregon

661 plants native to the lower 48 states, recorded in Oregon, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. Each links to its USDA PLANTS profile.

Trees 43

Alaska cedar75 ft · blooms mid spring · low shade tolerance · to −22 °Fbalsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fbigleaf maple60 ft · blooms mid spring · medium shade tolerance · to −14 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fboxelder60 ft · blooms early spring · low shade tolerance · to −46 °FBrewer spruce100 ft · blooms early summer · low shade tolerance · to −13 °F

Shrubs 132

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °Falderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °Falpine laurel1 ft · blooms late spring · low shade tolerance · to −28 °Fantelope bitterbrush6 ft · blooms early spring · medium shade tolerance · to −36 °Fbeaked hazelnut15 ft · blooms early spring · low shade tolerance · to −47 °Fbig sagebrush4 ft · blooms mid summer · high shade tolerance · to −43 °F

Wildflowers & perennials 305

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °FAmerican alpine speedwell1 ft · blooms summer · medium shade tolerance · to −28 °FAmerican bistort1.5 ft · blooms mid spring · high shade tolerance · to −38 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °F

Grasses 166

Alaska brome5 ft · blooms late spring · low shade tolerance · to −18 °FAlaska oniongrass3 ft · blooms mid spring · low shade tolerance · to −33 °Falkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °FAmerican beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °F

Vines 2

riverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Fwestern white clematis1 ft · blooms mid summer · medium shade tolerance · to −38 °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 Lebanon, OR.

Soil in Lebanon, OR

The soil mapped at the center of ZIP 97355 is Dixonville — silty clay loam, well drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up
pH6.1slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter4.5%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Dixonville-Philomath-Hazelair complex, 12 to 35 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 97355; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Lebanon, OR

Summer high86 °Faverage high, August
Winter low36 °Faverage low, December
Hot days30days a year at 90 °F or more
Freezing nights39nights a year at 32 °F or less
Growing degree days2,778base 50 °F — the season’s usable heat
Longest day15 h 33 mindaylight on June 21
Shortest day8 h 49 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation49.3 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 49 °F, low 37 °F 49°37° JanFebruary: average high 53 °F, low 37 °F 53°37° FebMarch: average high 58 °F, low 39 °F 58°39° MarApril: average high 62 °F, low 42 °F 62°42° AprMay: average high 69 °F, low 47 °F 69°47° MayJune: average high 76 °F, low 52 °F 76°52° JunJuly: average high 85 °F, low 55 °F 85°55° JulAugust: average high 86 °F, low 56 °F 86°56° AugSeptember: average high 79 °F, low 51 °F 79°51° SepOctober: average high 65 °F, low 45 °F 65°45° OctNovember: average high 54 °F, low 40 °F 54°40° NovDecember: average high 47 °F, low 36 °F 47°36° Dec

Precipitation by month inches

0″2″4″6″8″January: 6.47 in precipitation 6.5 JanFebruary: 5.45 in precipitation 5.5 FebMarch: 5.74 in precipitation 5.7 MarApril: 4.59 in precipitation 4.6 AprMay: 3.51 in precipitation 3.5 MayJune: 2.12 in precipitation 2.1 JunJuly: 0.49 in precipitation 0.5 JulAugust: 0.46 in precipitation 0.5 AugSeptember: 1.71 in precipitation 1.7 SepOctober: 4.25 in precipitation 4.3 OctNovember: 7.11 in precipitation 7.1 NovDecember: 7.38 in precipitation 7.4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Lebanon, OR (4 mi away); precipitation: Lebanon 4.8 E, OR (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

973358b
Crabtree, OR · 8 mi
973748b
Scio, OR · 11 mi
973228b
Albany, OR · 12 mi
973368b
Crawfordsville, OR · 12 mi
973278b
Brownsville, OR · 12 mi
973868b
Sweet Home, OR · 13 mi
973898b
Tangent, OR · 13 mi
973458b
Foster, OR · 15 mi

Oregon planting zones →

Questions about 97355

What planting zone is ZIP code 97355?

ZIP code 97355 (Lebanon, OR) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Lebanon, OR?

The median last spring frost (32 °F) near 97355 is March 14; after April 14 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Lebanon station.

When is the first frost in Lebanon, OR?

The median first fall frost near 97355 is November 18, giving a median frost-free growing season of 248 days.

When should I plant tomatoes in 97355?

Start tomato seeds indoors around Jan 17 – Jan 31 and set transplants outside around Mar 21 – Apr 4, one to three weeks after the median last frost.

How much rain and snow does 97355 get?

About 49.3 inches of precipitation a year (NOAA 1991–2020 normals, Lebanon 4.8 E station).

How hot do summers get in Lebanon, OR?

The average high peaks at 86 °F in August, with about 30 days a year at 90 °F or more.

What kind of soil does 97355 have?

The USDA soil survey maps Dixonville at the center of ZIP 97355: silty clay loam, well drained, pH about 6.1 (slightly acidic).

Did spring come early in Lebanon, OR in 2026?

Spring leaf-out near 97355 came on Feb 22 in 2026, about the same as the 1991–2020 average (Feb 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Lebanon, OR?

Long-day onions: the longest day near 97355 is 15 h 33 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).