Woodburn, Oregon, sits in USDA hardiness zone 8b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Expect cabbage, fig, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Woodburn, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Woodburn lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Woodburn — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Woodburn — the short answer
Woodburn, Oregon: USDA zone 8b, about 243 days between hard freezes, across 4K acres of city.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 23
- Marion County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 21
- Marion County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~243
- Marion County normal — NOAA 1991–2020, nearest to this town
- City area
- 4K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Marion County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Woodburn's average, not your lot's — a low corner or a tree line moves it. Against Woodburn's 243-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Woodburn
Each reading below is measured for Woodburn itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsWoodburn runs about 243 days between hard freezes (read from Marion County, the closest normal to Woodburn) — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredWoodburn sits in USDA hardiness zone 8b.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Woodburn is in
Woodburn sits in the Willamette Valley — EPA Level III, inside the wider Marine West Coast Forest. That is read at Woodburn's own centroid rather than borrowed from Marion County.
What Grows in Woodburn
Every plant below cleared Woodburn's own zone 8b and its 243-day season. Each card opens that plant's Oregon profile. How we score.
Is it too late to plant in Woodburn?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Feb 23; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 23 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 21 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
Documented around Woodburn
Survey cells within 31 miles of Woodburn checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 512 miles off. What to watch for.
What's on the federal record near Woodburn
Closest first, within ~10 miles of Woodburn. Listing isn't leaking, and distance isn't exposure.
- WOODBURN SCHOOL DIST SHOPUnderground Storage Tanks · 1300 ft
- LINCOLN AND FRENCH PRAIRIE SCHOOLSBrownfields · 1500 ft
- WOODBURN FIRE DISTRICTUnderground Storage Tanks · 1700 ft
- MCINNIS, DAVID & POLLYUnderground Storage Tanks · 1800 ft
- CENTRO GAS & MARKETUnderground Storage Tanks · 1800 ft
- SAUVAIN MOTOR COUnderground Storage Tanks · 2100 ft
- WOODBURN FERTILIZER AND GRAINBrownfields · 2200 ft
- WILBUR ELLIS WOODBURNToxics Release Inventory · 2200 ft
- WOODBURN FERTILIZER & GRAIN INCUnderground Storage Tanks · 2200 ft
- JABER, MOHAMMEDUnderground Storage Tanks · 2300 ft
- CASE AUTOMOTIVEUnderground Storage Tanks · 2400 ft
- WOODBURN LUMBER COUnderground Storage Tanks · 2600 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Woodburn's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Woodburn.
Total Sites
354
within ~10 miles of Woodburn
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Woodburn
Severity Distribution
within ~10 miles of Woodburn
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Woodburn, two things run higher than the national average within ~10 miles of Woodburn — CAFO (14 sites) and PFAS (4 sites). That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Woodburn
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Woodburn average
Your land is one point inside Woodburn
Everything above resolves to Woodburn as a whole — one PHZM band, read across 4K acres, with hard-freeze dates borrowed from Marion County’s record because no 30-year normal resolves at this city’s own centroid. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at city scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Woodburn Average
Woodburn Average
- ●USDA Zones 8b, averaged across Woodburn
- ●One soil character for all of Woodburn
- ●Frost dates read at Woodburn's scale: Mar 23 to Nov 21
YOUR Parcel
- ✓Your exact zone, not Woodburn's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Woodburn
Pull a site-specific report for your exact address in Woodburn, Oregon — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Woodburn averages can't show:
We read public map data around Woodburn — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Woodburn average
How we know this about Woodburn
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Marion County’s record, because none resolves here; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at city grain anywhere on this page — there is no city-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Woodburn
When does frost risk typically end in Woodburn?
The last hard freeze (28°F) in Woodburn typically lands around Mar 23, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about Apr 13.
When is the first frost in Woodburn?
The first hard freeze (28°F) in Woodburn typically arrives around Nov 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 7, so the watching starts about Oct 22 — about 243 days after the spring freeze cleared.
How long is the growing season in Woodburn?
Measured between 28°F hard freezes, Woodburn sees about 243 frost-free days — roughly Mar 23 through Nov 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 13 to Nov 7, about 208 days.
Is the soil safe to grow vegetables in Woodburn?
The federal record around Woodburn is a meaningful one — 354 documented sites, mostly Underground Storage Tanks entries (220), the nearest Underground Storage Tanks record about 0.3 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Woodburn?
From about Oct 22 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Nov 21 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Nov 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Woodburn's scale — its 8b band and its 243-day season. Your yard writes its own version of Woodburn's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Woodburn’s own scale
6 of the readings below were taken at Woodburn's own scale — the 3,966 acres it covers and 354 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Woodburn's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 354 documented contamination sites on the federal record near Woodburn, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Woodburn's boundary and the 3,966 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~243-day seasonGrowable Ground crop-matching engine
- The ecoregion at Woodburn's own centroid, the Willamette ValleyUS EPA Level III Ecoregions
- Lanternfly survey cells around Woodburn checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Woodburn has no normal of its own, so its county's is the closest measured readfrom Marion County
- Soil character — no town-scale survey exists, so Woodburn's 3,966 acres read through its county's SSURGO summaryfrom Marion County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Marion County
- The growing challenges every Oregon grower plans around — written at state scale, so they stay on the state guidefrom Oregon
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Marion County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Woodburn's 3,966 acreswhy one lot differs from the next →
- Which side of Woodburn you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,966 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Woodburn-wide figureread your own land →