Otis Orchards-East Farms, Washington, sits in USDA hardiness zone 7a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Expect cabbage, pawpaw, 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 Otis Orchards-East Farms, 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 Otis Orchards-East Farms 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 Otis Orchards-East Farms — soil, climate, flood, and parcel records. How we handle your address.
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Otis Orchards-East Farms — the short answer
Otis Orchards-East Farms, Washington: USDA zone 7a, about 194 days between hard freezes, across 5K acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 23
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~194
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 5K 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 Otis Orchards-East Farms's average, not your lot's — a low corner or a tree line moves it. Against Otis Orchards-East Farms's 194-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Otis Orchards-East Farms
Each reading below is measured for Otis Orchards-East Farms itself — here is what it means for a garden here, and the move an experienced grower makes about it.

Season length
MeasuredOtis Orchards-East Farms runs about 194 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals

Winter hardiness
MeasuredOtis Orchards-East Farms 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 Otis Orchards-East Farms is in
Otis Orchards-East Farms sits in the Northern Rockies — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Otis Orchards-East Farms's own centroid, and it is not what its county reads: Spokane County is mostly Columbia Plateau. The wider page above you is answering a different question about different ground.
What Grows in Otis Orchards-East Farms
Every plant below cleared Otis Orchards-East Farms's own zone 7a and its 194-day season. Each card opens that plant's Washington profile. How we score.






























Is it too late to plant in Otis Orchards-East Farms?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 15; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 12 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 23 — long-season crops need about 90 days of runway, quick greens only 30. As the window narrows, the plantings just get faster — fall brassicas, then greens, then garlic to finish.
What's on the federal record near Otis Orchards-East Farms
Closest first, within ~10 miles of Otis Orchards-East Farms. Listing isn't leaking, and distance isn't exposure.
- GAS MART 043Underground Storage Tanks · 1900 ft
- 26N/45E-35F02Nitrate · 1900 ft
- 26N/45E-35F01Nitrate · 2000 ft
- SPOKANE COUNTY FIRE PROTECTION DIST 1Underground Storage Tanks · 0.6 mi
- EVSD 361 TRANSPORTATION FACILITYUnderground Storage Tanks · 0.6 mi
- 26N/45E-36N01Nitrate · 0.8 mi
- 25N/45E-02G02Nitrate · 0.8 mi
- 26N/45E-34L03Nitrate · 0.8 mi
- 26N/45E-34L01Nitrate · 0.8 mi
- 26N/45E-36E01Nitrate · 0.9 mi
- WILLIAMS NORTHWEST PIPELINE GP NEWMAN LABrownfields · 0.9 mi
- 26N/45E-36Q01Nitrate · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Otis Orchards-East Farms'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 Otis Orchards-East Farms.
Total Sites
637
within ~10 miles of Otis Orchards-East Farms
Risk Level
High
Highest-severity
4 Superfund sites
Sources Checked
within ~10 miles of Otis Orchards-East Farms
Severity Distribution
within ~10 miles of Otis Orchards-East Farms
Highest-Severity Sites

A note from Gnorman
What an experienced grower watches for around here
In and around Otis Orchards-East Farms, two things run higher than the national average within ~10 miles of Otis Orchards-East Farms — PFAS (11 sites) and Toxics Release Inventory (55 sites). That's not a problem with your land — it's information about it.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Otis Orchards-East Farms
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 Otis Orchards-East Farms average
Your land is one point inside Otis Orchards-East Farms
Everything above resolves to Otis Orchards-East Farms as a whole — one PHZM band and one 28°F frost record, read across 5K 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 Otis Orchards-East Farms Average
Otis Orchards-East Farms Average
- ●USDA Zones 7a, averaged across Otis Orchards-East Farms
- ●One soil character for all of Otis Orchards-East Farms
- ●Frost dates read at Otis Orchards-East Farms's scale: Apr 12 to Oct 23
YOUR Parcel
- ✓Your exact zone, not Otis Orchards-East Farms's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Otis Orchards-East Farms
Pull a site-specific report for your exact address in Otis Orchards-East Farms, Washington — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Otis Orchards-East Farms averages can't show:
We read public map data around Otis Orchards-East Farms — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Otis Orchards-East Farms average
How we know this about Otis Orchards-East Farms
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 Otis Orchards-East Farms’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 Otis Orchards-East Farms
When does frost risk typically end in Otis Orchards-East Farms?
The last hard freeze (28°F) in Otis Orchards-East Farms typically lands around Apr 12, 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 May 3.
When is the first frost in Otis Orchards-East Farms?
The first hard freeze (28°F) in Otis Orchards-East Farms typically arrives around Oct 23, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 9, so the watching starts about Sep 23 — about 194 days after the spring freeze cleared.
How long is the growing season in Otis Orchards-East Farms?
Measured between 28°F hard freezes, Otis Orchards-East Farms sees about 194 frost-free days — roughly Apr 12 through Oct 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 3 to Oct 9, about 159 days.
Is the soil safe to grow vegetables in Otis Orchards-East Farms?
The federal record around Otis Orchards-East Farms runs heavier than most — 637 documented sites, mostly Underground Storage Tanks entries (250), the nearest Underground Storage Tanks record about 0.4 miles out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Otis Orchards-East Farms?
From about Sep 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 Oct 23 (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 Oct 23. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Otis Orchards-East Farms's scale — its 7a band and its 194-day season. Your yard writes its own version of Otis Orchards-East Farms'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 Otis Orchards-East Farms’s own scale
6 of the readings below were taken at Otis Orchards-East Farms's own scale — its own ~194-day season between 28°F freezes, the 5,140 acres it covers and 637 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Otis Orchards-East Farms's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Otis Orchards-East Farms's own 28°F hard-freeze dates, about Apr 12 and Oct 23 and the ~194-day span between themNOAA 1991–2020 Climate Normals
- 637 documented contamination sites on the federal record near Otis Orchards-East Farms, the closest Underground Storage Tanks record about 0.4 miles out from the town centreFederal environmental registers
- Otis Orchards-East Farms's boundary and the 5,140 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~194-day seasonGrowable Ground crop-matching engine
- Otis Orchards-East Farms sits in the Northern Rockies — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Otis Orchards-East Farms's 5,140 acres read through its county's SSURGO summaryfrom Spokane County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Spokane 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 Spokane County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Otis Orchards-East Farms's 5,140 acreswhy one lot differs from the next →
- Which side of Otis Orchards-East Farms you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 5,140 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.4 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 Otis Orchards-East Farms-wide figureread your own land →
