Basin City, Washington, sits in USDA hardiness zone 7a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Crops well matched to these conditions include cabbage, hazelnut, california poppy, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Basin City, 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 Basin City 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 Basin City — soil, climate, flood, and parcel records. How we handle your address.
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Basin City — the short answer
Basin City, Washington: USDA zone 7a, about 230 days between hard freezes, across 2K acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 17
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~230
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 2K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 7a is Basin City's average, not your lot's — a low corner or a tree line moves it. Against Basin City's 230-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Basin City
Each reading below is measured for Basin City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBasin City runs about 230 days between hard freezes — 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
MeasuredBasin City sits in USDA hardiness zone 7a.
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 Basin City is in
Basin City sits in the Columbia Plateau — EPA Level III, inside the wider North American Deserts. That is read at Basin City's own centroid rather than borrowed from Franklin County.
What Grows in Basin City
Every plant below cleared Basin City's own zone 7a and its 230-day season. Each card opens that plant's Washington profile. How we score.
Is it too late to plant in Basin City?
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 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 17 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 2 — 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.
What's on the federal record near Basin City
Closest first, within ~10 miles of Basin City. Listing isn't leaking, and distance isn't exposure.
- Estudillo IncUnderground Storage Tanks · 950 ft
- BASIN CITY SCHOOLUnderground Storage Tanks · 1600 ft
- BIG BEND ELECTRIC COOPERATIVE INCBrownfields · 2400 ft
- 13N/29E-23P01 SU91Nitrate · 0.6 mi
- 13N/29E-26B01Nitrate · 0.6 mi
- TRI-CITY HELICOPTER INCUnderground Storage Tanks · 0.7 mi
- PUREGRO COMPANY MESAUnderground Storage Tanks · 1.2 mi
- WINEBARGER FARMSUnderground Storage Tanks · 1.2 mi
- BASIN CITY AIRSTRIPUnderground Storage Tanks · 1.3 mi
- CONNELL OIL INCORPORATEDUnderground Storage Tanks · 1.3 mi
- 12N/29E-03D01 OE05Nitrate · 2.1 mi
- COLUMBIA BASIN PROJECTUnderground Storage Tanks · 3.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Basin City'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 Basin City.
Total Sites
130
within ~10 miles of Basin City
Risk Level
Moderate
Highest-severity
1 concentrated animal feeding operation
Sources Checked
within ~10 miles of Basin City
Severity Distribution
within ~10 miles of Basin City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Basin City, Nitrate runs higher than the national average — 92 sites within ~10 miles of Basin City. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Basin City
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 Basin City average
Your land is one point inside Basin City
Everything above resolves to Basin City as a whole — one PHZM band and one 28°F frost record, read across 2K acres. 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 Basin City Average
Basin City Average
- ●USDA Zones 7a, averaged across Basin City
- ●One soil character for all of Basin City
- ●Frost dates read at Basin City's scale: Mar 17 to Nov 2
YOUR Parcel
- ✓Your exact zone, not Basin City's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Basin City
Pull a site-specific report for your exact address in Basin City, Washington — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Basin City averages can't show:
We read public map data around Basin City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Basin City average
How we know this about Basin City
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 Basin City’s own record; 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 Basin City
When does frost risk typically end in Basin City?
The last hard freeze (28°F) in Basin City typically lands around Mar 17, 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 7.
When is the first frost in Basin City?
The first hard freeze (28°F) in Basin City typically arrives around Nov 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 19, so the watching starts about Oct 3 — about 230 days after the spring freeze cleared.
How long is the growing season in Basin City?
Measured between 28°F hard freezes, Basin City sees about 230 frost-free days — roughly Mar 17 through Nov 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 7 to Oct 19, about 195 days.
Is the soil safe to grow vegetables in Basin City?
The federal record around Basin City shows 130 documented sites, mostly Nitrate entries (92), the nearest Underground Storage Tanks record about 0.2 miles 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 Basin City?
From about Oct 3 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 2 (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 2. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Basin City's scale — its 7a band and its 230-day season. Your yard writes its own version of Basin City'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 Basin City’s own scale
6 of the readings below were taken at Basin City's own scale — its own ~230-day season between 28°F freezes, the 2,041 acres it covers and 130 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Basin City's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Basin City's own 28°F hard-freeze dates, about Mar 17 and Nov 2 and the ~230-day span between themNOAA 1991–2020 Climate Normals
- 130 documented contamination sites on the federal record near Basin City, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Basin City's boundary and the 2,041 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~230-day seasonGrowable Ground crop-matching engine
- The ecoregion at Basin City's own centroid, the Columbia PlateauUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Basin City's 2,041 acres read through its county's SSURGO summaryfrom Franklin County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Franklin County
- The growing challenges every Washington grower plans around — written at state scale, so they stay on the state guidefrom Washington
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Franklin County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Basin City's 2,041 acreswhy one lot differs from the next →
- Which side of Basin City you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,041 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 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 Basin City-wide figureread your own land →
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