Powers, Oregon, sits in USDA hardiness zone 9a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Reliable performers under these conditions include artichoke, fig, california poppy, and cabbage; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Powers, 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 Powers 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 Powers — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Powers — the short answer
Powers, Oregon: USDA zone 9a, about 292 days between hard freezes, across 374 acres of city.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 8
- Coos County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 27
- Coos County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~292
- Coos County normal — NOAA 1991–2020, nearest to this town
- City area
- 374 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 Coos County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is Powers's average, not your lot's — a low corner or a tree line moves it. Against Powers's 292-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Powers
Each reading below is measured for Powers itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsPowers runs about 292 days between hard freezes (read from Coos County, the closest normal to Powers) — 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
MeasuredPowers sits in USDA hardiness zone 9a.
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 Powers is in
Powers sits in the Coast Range — EPA Level III, inside the wider Marine West Coast Forest. That is read at Powers's own centroid rather than borrowed from Coos County.
What Grows in Powers
Every plant below cleared Powers's own zone 9a and its 292-day season. Each card opens that plant's Oregon profile. How we score.
Is it too late to plant in Powers?
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 Jan 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 8 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 27 — long-season crops need about 90 days of runway, quick greens only 30. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
What's on the federal record near Powers
Closest first, within ~10 miles of Powers. Listing isn't leaking, and distance isn't exposure.
- GTE - POWERS CENTRAL OFFICE (6100-B01)Underground Storage Tanks · 1100 ft
- GEORGIA-PACIFIC CORPORATIONUnderground Storage Tanks · 1100 ft
- CITY OF POWERS PUBLIC UTILITIES SHOPUnderground Storage Tanks · 1600 ft
- GTE - POWERS MICROWAVE (6140-B01)Underground Storage Tanks · 1900 ft
- POWERS SERVICESUnderground Storage Tanks · 2000 ft
- HODGE DISTRIBUTOR INCUnderground Storage Tanks · 2000 ft
- ABBOTT'S MARKETUnderground Storage Tanks · 2100 ft
- POWERS RANGER STATIONUnderground Storage Tanks · 0.8 mi
- White Rock ChromiteMining · 7.2 mi
- White RockMining · 7.2 mi
- Salmon Mountain MineMining · 8.2 mi
- Magna BonusMining · 8.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Powers'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 Powers.
Severity Distribution
within ~10 miles of Powers
Highest-Severity Sites
Know Before You Grow
- •Mine waste leaches heavy metals. Test for lead, arsenic and cadmium before growing food here.
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
Check your specific parcel in Powers
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 Powers average
Your land is one point inside Powers
Everything above resolves to Powers as a whole — one PHZM band, read across 374 acres, with hard-freeze dates borrowed from Coos 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 Powers Average
Powers Average
- ●USDA Zones 9a, averaged across Powers
- ●One soil character for all of Powers
- ●Frost dates read at Powers's scale: Feb 8 to Nov 27
YOUR Parcel
- ✓Your exact zone, not Powers's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Powers
Pull a site-specific report for your exact address in Powers, Oregon — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Powers averages can't show:
We read public map data around Powers — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Powers average
How we know this about Powers
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 Coos 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 Powers
When does frost risk typically end in Powers?
The last hard freeze (28°F) in Powers typically lands around Feb 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 1.
When is the first frost in Powers?
The first hard freeze (28°F) in Powers typically arrives around Nov 27, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 13, so the watching starts about Oct 28 — about 292 days after the spring freeze cleared.
How long is the growing season in Powers?
Measured between 28°F hard freezes, Powers sees about 292 frost-free days — roughly Feb 8 through Nov 27, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 1 to Nov 13, about 257 days.
Is the soil safe to grow vegetables in Powers?
The federal record around Powers shows 21 documented sites, mostly Mining entries (12), 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 Powers?
From about Oct 28 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 27 (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 27. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Powers's scale — its 9a band and its 292-day season. Your yard writes its own version of Powers'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 Powers’s own scale
5 of the readings below were taken at Powers's own scale — the 374 acres it covers and 21 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Powers's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 21 documented contamination sites on the federal record near Powers, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Powers's boundary and the 374 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~292-day seasonGrowable Ground crop-matching engine
- The ecoregion at Powers's own centroid, the Coast RangeUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Powers has no normal of its own, so its county's is the closest measured readfrom Coos County
- Soil character — no town-scale survey exists, so Powers's 374 acres read through its county's SSURGO summaryfrom Coos County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Coos 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 Coos County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Powers's 374 acreswhy one lot differs from the next →
- Which side of Powers you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 374 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 Powers-wide figureread your own land →