Elk City, Idaho, sits in USDA hardiness zone 5b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
On paper, okra, blackberry, lavender, and pumpkin all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Elk 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 Elk 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 Elk City — soil, climate, flood, and parcel records. How we handle your address.
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Elk City — the short answer
Elk City, Idaho: USDA zone 5b, about 110 days between hard freezes, across 2K acres of town.
- USDA zone
- 5b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 22
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Sep 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~110
- 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 5b is Elk City's average, not your lot's — a low corner or a tree line moves it. Against Elk City's 110-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Elk City
Each reading below is measured for Elk City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredElk City runs about 110 days between hard freezes — a short growing season.
Long-maturing crops like melons, sweet potatoes, and winter squash can run out of runway before the first hard freeze, ripening late or not at all.
Lead with fast-maturing varieties, and stretch the season on both ends with cold frames, low tunnels, or a greenhouse.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredElk City sits in USDA hardiness zone 5b.
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 Elk City is in
Elk City sits in the Idaho Batholith — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Elk City's own centroid rather than borrowed from Idaho County.
What Grows in Elk City
Every plant below cleared Elk City's own zone 5b and its 110-day season. Each card opens that plant's Idaho profile. How we score.
Is it too late to plant in Elk City?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Apr 24; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 22 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 9 — long-season crops need about 90 days of runway, quick greens only 30. Short seasons reward decisiveness — quick-maturing varieties late, hardy greens under cover, and next year’s garlic in the ground before it closes.
What's on the federal record near Elk City
Closest first, within ~10 miles of Elk City. Listing isn't leaking, and distance isn't exposure.
- Elk Creek Station & CafeUnderground Storage Tanks · 1800 ft
- ELK CITY HOTELUnderground Storage Tanks · 2000 ft
- ELK COUNTRY OUTPOSTUnderground Storage Tanks · 2100 ft
- Dixie Motel and MercantileUnderground Storage Tanks · 2300 ft
- ELK CITY RANGER STATIONUnderground Storage Tanks · 2300 ft
- ELK CITY GENERAL STORE INCUnderground Storage Tanks · 2400 ft
- IDAHO COUNTY ROAD DEPT (2)Underground Storage Tanks · 2600 ft
- Deadwood CanyonMining · 0.6 mi
- RED RIVER RANGER STATIONUnderground Storage Tanks · 0.7 mi
- Elk City DistrictMining · 0.8 mi
- Whitaker DepositMining · 1.1 mi
- USDOI BLM HWS GOLD & SILVER MINE ELK CYSuperfund · 1.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Elk 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 Elk City.
Total Sites
64
within ~10 miles of Elk City
Risk Level
High
Highest-severity
8 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Elk City
Severity Distribution
within ~10 miles of Elk City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Elk City, two things run higher than the national average within ~10 miles of Elk City — Mining (41 sites) and Superfund (8 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Elk 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 Elk City average
Your land is one point inside Elk City
Everything above resolves to Elk 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 Elk City Average
Elk City Average
- ●USDA Zones 5b, averaged across Elk City
- ●One soil character for all of Elk City
- ●Frost dates read at Elk City's scale: May 22 to Sep 9
YOUR Parcel
- ✓Your exact zone, not Elk City's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Elk City
Pull a site-specific report for your exact address in Elk City, Idaho — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Elk City averages can't show:
We read public map data around Elk City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Elk City average
How we know this about Elk 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 Elk 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 Elk City
When does frost risk typically end in Elk City?
The last hard freeze (28°F) in Elk City typically lands around May 22, 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 Jun 12.
When is the first frost in Elk City?
The first hard freeze (28°F) in Elk City typically arrives around Sep 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Aug 26, so the watching starts about Aug 10 — about 110 days after the spring freeze cleared.
How long is the growing season in Elk City?
Measured between 28°F hard freezes, Elk City sees about 110 frost-free days — roughly May 22 through Sep 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 12 to Aug 26, about 75 days.
Is the soil safe to grow vegetables in Elk City?
The federal record around Elk City runs heavier than most — 64 documented sites, mostly Mining entries (41), the nearest Underground Storage Tanks record about 0.3 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 gardeners stretch the season in Elk City?
With about 110 frost-free days between hard freezes, Elk City rewards the classic extension moves: floating row cover buys roughly two to four extra weeks at each shoulder — on this season that is a working window nearer 138 to 166 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 22 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Elk City's scale — its 5b band and its 110-day season. Your yard writes its own version of Elk 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 Elk City’s own scale
6 of the readings below were taken at Elk City's own scale — its own ~110-day season between 28°F freezes, the 1,604 acres it covers and 64 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Elk City's own USDA hardiness band, zones 5bUSDA PHZM 2023
- Elk City's own 28°F hard-freeze dates, about May 22 and Sep 9 and the ~110-day span between themNOAA 1991–2020 Climate Normals
- 64 documented contamination sites on the federal record near Elk City, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Elk City's boundary and the 1,604 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~110-day seasonGrowable Ground crop-matching engine
- The ecoregion at Elk City's own centroid, the Idaho BatholithUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Elk City's 1,604 acres read through its county's SSURGO summaryfrom Idaho County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Idaho County
- The growing challenges every Idaho grower plans around — written at state scale, so they stay on the state guidefrom Idaho
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Idaho County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Elk City's 1,604 acreswhy one lot differs from the next →
- Which side of Elk 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 1,604 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Elk City-wide figureread your own land →
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