Westport, Oregon, sits in USDA hardiness zone 8b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
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 Westport, 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 Westport 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 Westport — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Westport — the short answer
Westport, Oregon: USDA zone 8b, about 263 days between hard freezes, across 424 acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 4
- Clatsop County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 22
- Clatsop County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~263
- Clatsop County normal — NOAA 1991–2020, nearest to this town
- Town area
- 424 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 Clatsop County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Westport's average, not your lot's — a low corner or a tree line moves it. Against Westport's 263-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Westport
Each reading below is measured for Westport itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsWestport runs about 263 days between hard freezes (read from Clatsop County, the closest normal to Westport) — close to year-round growing.
Frost is rarely the limit here; winter plantings are as real as summer ones, and the harder question is which crops shrug off the summer heat.
Grow cool-season crops through the mild winter, and choose heat-tolerant varieties for the summer beds.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredWestport 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 Westport is in
Westport sits in the Coast Range — EPA Level III, inside the wider Marine West Coast Forest. That is read at Westport's own centroid rather than borrowed from Clatsop County.
What Grows in Westport
Every plant below cleared Westport's own zone 8b and its 263-day season. Each card opens that plant's Oregon profile. How we score.
Is it too late to plant in Westport?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 22 — long-season crops need about 90 days of runway, quick greens only 30. In a climate this gentle, “too late” hardly applies — the question becomes which crops prefer the cooler months ahead.
What's on the federal record near Westport
Closest first, within ~10 miles of Westport. Listing isn't leaking, and distance isn't exposure.
- WESTPORT MARKETUnderground Storage Tanks · 450 ft
- AT&T - NICOLAIUnderground Storage Tanks · 1200 ft
- CROWN ZELLERBACHUnderground Storage Tanks · 2.3 mi
- WOODSON GENERAL STOREUnderground Storage Tanks · 2.4 mi
- WAUNA MILLToxics Release Inventory · 2.5 mi
- WAUNA MILLBrownfields · 2.5 mi
- Georgia Pacific (Fort James) Wauna Mill Landfill Well C-4Nitrate · 3.1 mi
- Georgia Pacific (Fort James) Wauna Mill Landfill Well B-4Nitrate · 3.3 mi
- Georgia Pacific (Fort James) Wauna Mill Landfill Well C-2Nitrate · 3.3 mi
- Georgia Pacific (Fort James) Wauna Mill Landfill Well D-1Nitrate · 3.3 mi
- Georgia Pacific (Fort James) Wauna Mill Landfill Well C-1Nitrate · 3.3 mi
- Georgia Pacific (Fort James) Wauna Mill Landfill Well C-3Nitrate · 3.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Westport'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 Westport.
Total Sites
66
within ~10 miles of Westport
Risk Level
Moderate
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Westport
Severity Distribution
within ~10 miles of Westport
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in Westport
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 Westport average
Your land is one point inside Westport
Everything above resolves to Westport as a whole — one PHZM band, read across 424 acres, with hard-freeze dates borrowed from Clatsop County’s record because no 30-year normal resolves at this town’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 town 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 Westport Average
Westport Average
- ●USDA Zones 8b, averaged across Westport
- ●One soil character for all of Westport
- ●Frost dates read at Westport's scale: Mar 4 to Nov 22
YOUR Parcel
- ✓Your exact zone, not Westport's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Westport
Pull a site-specific report for your exact address in Westport, Oregon — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Westport averages can't show:
We read public map data around Westport — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Westport average
How we know this about Westport
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Clatsop 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 town grain anywhere on this page — there is no town-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 Westport
When does frost risk typically end in Westport?
The last hard freeze (28°F) in Westport typically lands around Mar 4, 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 Mar 25.
When is the first frost in Westport?
The first hard freeze (28°F) in Westport typically arrives around Nov 22, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 8, so the watching starts about Oct 23 — about 263 days after the spring freeze cleared.
How long is the growing season in Westport?
Measured between 28°F hard freezes, Westport sees about 263 frost-free days — roughly Mar 4 through Nov 22, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 25 to Nov 8, about 228 days.
Is the soil safe to grow vegetables in Westport?
The federal record around Westport shows 66 documented sites, mostly Underground Storage Tanks entries (35), the nearest Underground Storage Tanks record under a tenth of a mile out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Westport?
From about Oct 23 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 22 (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 22. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Westport's scale — its 8b band and its 263-day season. Your yard writes its own version of Westport'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 Westport’s own scale
5 of the readings below were taken at Westport's own scale — the 424 acres it covers and 66 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Westport's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 66 documented contamination sites on the federal record near Westport, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Westport's boundary and the 424 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~263-day seasonGrowable Ground crop-matching engine
- The ecoregion at Westport's own centroid, the Coast RangeUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Westport has no normal of its own, so its county's is the closest measured readfrom Clatsop County
- Soil character — no town-scale survey exists, so Westport's 424 acres read through its county's SSURGO summaryfrom Clatsop County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Clatsop 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 Clatsop County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Westport's 424 acreswhy one lot differs from the next →
- Which side of Westport you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 424 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Westport-wide figureread your own land →