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

Planting zone for 97535 — Phoenix, OR

ZIP code 97535 (Phoenix, Jackson County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is May 6 and the first fall frost October 8.

Where ZIP 97535 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 frostMay 6

First frostOct 8

2012 zone8a

Was 8a 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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Phoenix, 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 Phoenix, OR

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMay 6median — 50% chance of a later frost

Safe for tender plantsMay 27only 10% chance of frost after

First fall frostOctober 8median — 10% chance by Sep 21

Growing season154 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 15 and returns around October 26.

From the NOAA station Ashland, OR — 6 miles away, elevation 1,729 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 97535

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 25 – Apr 8

SpinachSow outdoors · Mar 25 – Apr 15

Broccoli, cabbageStart indoors · Feb 25 – Mar 11

Broccoli, cabbageTransplant · Apr 15 – Apr 29

Onion setsPlant outdoors · Apr 8 – Apr 22

PotatoesPlant outdoors · Apr 15 – Apr 29

LettuceSow outdoors · Apr 8 – Apr 22

Carrots, beetsSow outdoors · Apr 15 – Apr 29

TomatoesStart indoors · Mar 11 – Mar 25

TomatoesTransplant · May 13 – May 27

Peppers, eggplantStart indoors · Feb 25 – Mar 11

Peppers, eggplantTransplant · May 20 – Jun 3

BeansSow outdoors · May 13 – May 27

Sweet cornSow outdoors · May 13 – May 27

Cucumbers, squashSow outdoors · May 13 – May 27

Fall lettuce, spinachSow outdoors · Aug 13 – Aug 27

GarlicPlant cloves · Sep 24 – Oct 29

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 6) and first fall frost (Oct 8) 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 97535 came on Feb 13 — 10 days earlier than the 1991–2020 average (Feb 23).

average
Feb 232026
Feb 13

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.

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 Phoenix, OR.

Soil in Phoenix, OR

The soil mapped at the center of ZIP 97535 is Debenger — loam, well drained.

TextureLoama good balance for most vegetables

pH6.1slightly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2%moderate

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Debenger-Brader loams, 15 to 40 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 97535; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Phoenix, OR

Summer high88 °Faverage high, July

Winter low29 °Faverage low, December

Hot days38days a year at 90 °F or more

Freezing nights115nights a year at 32 °F or less

Growing degree days2,333base 50 °F — the season’s usable heat

Longest day15 h 16 mindaylight on June 21

Shortest day9 h 05 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation24.3 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: Ashland, OR (6 mi away); precipitation: Medford 5.7 S, OR (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

Central Point, OR · 12 mi

975248a

Eagle Point, OR · 16 mi

975208a

Ashland, OR · 17 mi

975258b

Gold Hill, OR · 17 mi

975308a

Jacksonville, OR · 18 mi

Oregon planting zones →

Questions about 97535

What planting zone is ZIP code 97535?

ZIP code 97535 (Phoenix, 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 Phoenix, OR?

The median last spring frost (32 °F) near 97535 is May 6; after May 27 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Ashland station.

When is the first frost in Phoenix, OR?

The median first fall frost near 97535 is October 8, giving a median frost-free growing season of 154 days.

When should I plant tomatoes in 97535?

Start tomato seeds indoors around Mar 11 – Mar 25 and set transplants outside around May 13 – May 27, one to three weeks after the median last frost.

How much rain and snow does 97535 get?

About 24.3 inches of precipitation a year (NOAA 1991–2020 normals, Medford 5.7 S station).

How hot do summers get in Phoenix, OR?

The average high peaks at 88 °F in July, with about 38 days a year at 90 °F or more.

What kind of soil does 97535 have?

The USDA soil survey maps Debenger at the center of ZIP 97535: loam, well drained, pH about 6.1 (slightly acidic).

Did spring come early in Phoenix, OR in 2026?

Spring leaf-out near 97535 came on Feb 13 in 2026, 10 days earlier than the 1991–2020 average (Feb 23), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Phoenix, OR?

Long-day onions: the longest day near 97535 is 15 h 16 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 97535 change?

Yes. The 2012 USDA map put 97535 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.