Summit, Oregon, sits in USDA hardiness zone 8b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Among the crops suited to this profile: cabbage, fig, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Summit, 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 Summit 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 Summit — soil, climate, flood, and parcel records. How we handle your address.
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Summit — the short answer
Summit, Oregon: USDA zone 8b, about 256 days between hard freezes, across 204 acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 8
- Benton County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 19
- Benton County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~256
- Benton County normal — NOAA 1991–2020, nearest to this town
- Town area
- 204 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 Benton County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Summit's average, not your lot's — a low corner or a tree line moves it. Against Summit's 256-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Summit
Each reading below is measured for Summit itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsSummit runs about 256 days between hard freezes (read from Benton County, the closest normal to Summit) — 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
MeasuredSummit 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 Summit is in
Summit sits in the Coast Range — EPA Level III, inside the wider Marine West Coast Forest. That is read at Summit's own centroid, and it is not what its county reads: Benton County is mostly Willamette Valley. The wider page above you is answering a different question about different ground.
What Grows in Summit
Every plant below cleared Summit's own zone 8b and its 256-day season. Each card opens that plant's Oregon profile. How we score.
Is it too late to plant in Summit?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 8; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 8 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 19 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
Documented around Summit
Survey cells within 31 miles of Summit checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 481 miles off. What to watch for.
What's on the federal record near Summit
Closest first, within ~10 miles of Summit. Listing isn't leaking, and distance isn't exposure.
- BURNT WOODS STOREUnderground Storage Tanks · 3.2 mi
- BLODGETT COUNTRY STOREUnderground Storage Tanks · 3.9 mi
- SHADY BEND STOREUnderground Storage Tanks · 4.2 mi
- PHILOMATH PUBLIC WORKSPFAS · 7.0 mi
- MARY'S PEAK RADIO STATIONUnderground Storage Tanks · 7.0 mi
- EDDYVILLEUnderground Storage Tanks · 7.5 mi
- 3-G LUMBER CO.Underground Storage Tanks · 8.1 mi
- KINGS VALLEY STOREUnderground Storage Tanks · 8.4 mi
- HOSKINS LUMBER CO., CORP.Underground Storage Tanks · 8.7 mi
- PIONEER TELEPHONE COOP./ W. MARYS PEAKUnderground Storage Tanks · 9.9 mi
- EDDYVILLE SCHOOLUnderground Storage Tanks · 10.0 mi
Measured from Summit'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 Summit.
Severity Distribution
within ~10 miles of Summit
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •PFAS do not break down in groundwater. Irrigate from a tested source.
Check your specific parcel in Summit
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 Summit average
Your land is one point inside Summit
Everything above resolves to Summit as a whole — one PHZM band, read across 204 acres, with hard-freeze dates borrowed from Benton 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 Summit Average
Summit Average
- ●USDA Zones 8b, averaged across Summit
- ●One soil character for all of Summit
- ●Frost dates read at Summit's scale: Mar 8 to Nov 19
YOUR Parcel
- ✓Your exact zone, not Summit's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Summit
Pull a site-specific report for your exact address in Summit, Oregon — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Summit averages can't show:
We read public map data around Summit — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Summit average
How we know this about Summit
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 Benton 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 Summit
When does frost risk typically end in Summit?
The last hard freeze (28°F) in Summit typically lands around Mar 8, 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 29.
When is the first frost in Summit?
The first hard freeze (28°F) in Summit typically arrives around Nov 19, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 5, so the watching starts about Oct 20 — about 256 days after the spring freeze cleared.
How long is the growing season in Summit?
Measured between 28°F hard freezes, Summit sees about 256 frost-free days — roughly Mar 8 through Nov 19, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 29 to Nov 5, about 221 days.
Is the soil safe to grow vegetables in Summit?
The federal record around Summit is light — 11 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (10), the nearest Underground Storage Tanks record about 3.2 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in Summit?
From about Oct 20 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 19 (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 19. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Summit's scale — its 8b band and its 256-day season. Your yard writes its own version of Summit'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 Summit’s own scale
6 of the readings below were taken at Summit's own scale — the 204 acres it covers and 11 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Summit's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 11 documented contamination sites on the federal record near Summit, the closest Underground Storage Tanks record about 3.2 miles out from the town centreFederal environmental registers
- Summit's boundary and the 204 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~256-day seasonGrowable Ground crop-matching engine
- Summit sits in the Coast Range — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- Lanternfly survey cells around Summit checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Summit has no normal of its own, so its county's is the closest measured readfrom Benton County
- Soil character — no town-scale survey exists, so Summit's 204 acres read through its county's SSURGO summaryfrom Benton County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Benton 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 Benton County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Summit's 204 acreswhy one lot differs from the next →
- Which side of Summit you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 204 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 3.2 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 Summit-wide figureread your own land →