Pinehurst, Idaho, sits in USDA hardiness zone 6b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Reliable performers under these conditions include cabbage, blackberry, california poppy, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Pinehurst, 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 Pinehurst 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 Pinehurst — soil, climate, flood, and parcel records. How we handle your address.
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Pinehurst — the short answer
Pinehurst, Idaho: USDA zone 6b, about 183 days between hard freezes, across 637 acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~183
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 637 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 6b is Pinehurst's average, not your lot's — a low corner or a tree line moves it. Against Pinehurst's 183-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Pinehurst
Each reading below is measured for Pinehurst itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredPinehurst runs about 183 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
MeasuredPinehurst sits in USDA hardiness zone 6b.
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 Pinehurst is in
Pinehurst sits in the Northern Rockies — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Pinehurst's own centroid rather than borrowed from Shoshone County.
What Grows in Pinehurst
Every plant below cleared Pinehurst's own zone 6b and its 183-day season. Each card opens that plant's Idaho profile. How we score.
Is it too late to plant in Pinehurst?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 18 — 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 Pinehurst
Closest first, within ~10 miles of Pinehurst. Listing isn't leaking, and distance isn't exposure.
- HICO STATIONUnderground Storage Tanks · 1000 ft
- LIBERAL KING MILLSITE & TAILINGSSuperfund · 1100 ft
- NABOB MILLSITE & MINESuperfund · 1100 ft
- CAROUSEL GAS & TIRE, INC.Underground Storage Tanks · 1400 ft
- PINEHURST CENTRAL OFFICEUnderground Storage Tanks · 1600 ft
- PINEHURST SUPER STOPUnderground Storage Tanks · 1800 ft
- 48N 02E 05CBD1Nitrate · 2000 ft
- 48N 02E 05CDB2Nitrate · 2300 ft
- SHIPLETT CHEVRONUnderground Storage Tanks · 2600 ft
- Coeur D'Alene AntimonyMining · 0.6 mi
- PINEHURSTNitrate · 0.6 mi
- Blue Star ProspectMining · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Pinehurst'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 Pinehurst.
Sources Checked
within ~10 miles of Pinehurst
Severity Distribution
within ~10 miles of Pinehurst
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Pinehurst, two things run higher than the national average within ~10 miles of Pinehurst — Mining (204 sites) and Nitrate (254 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Pinehurst
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 Pinehurst average
Your land is one point inside Pinehurst
Everything above resolves to Pinehurst as a whole — one PHZM band and one 28°F frost record, read across 637 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 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 Pinehurst Average
Pinehurst Average
- ●USDA Zones 6b, averaged across Pinehurst
- ●One soil character for all of Pinehurst
- ●Frost dates read at Pinehurst's scale: Apr 18 to Oct 18
YOUR Parcel
- ✓Your exact zone, not Pinehurst's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Pinehurst
Pull a site-specific report for your exact address in Pinehurst, Idaho — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Pinehurst averages can't show:
We read public map data around Pinehurst — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Pinehurst average
How we know this about Pinehurst
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 Pinehurst’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 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 Pinehurst
When does frost risk typically end in Pinehurst?
The last hard freeze (28°F) in Pinehurst typically lands around Apr 18, 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 9.
When is the first frost in Pinehurst?
The first hard freeze (28°F) in Pinehurst typically arrives around Oct 18, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 4, so the watching starts about Sep 18 — about 183 days after the spring freeze cleared.
How long is the growing season in Pinehurst?
Measured between 28°F hard freezes, Pinehurst sees about 183 frost-free days — roughly Apr 18 through Oct 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 9 to Oct 4, about 148 days.
Is the soil safe to grow vegetables in Pinehurst?
The federal record around Pinehurst runs heavier than most — 528 documented sites, mostly Nitrate entries (254), the nearest Underground Storage Tanks record about 0.2 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 Pinehurst?
From about Sep 18 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 18 (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 18. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Pinehurst's scale — its 6b band and its 183-day season. Your yard writes its own version of Pinehurst'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 Pinehurst’s own scale
6 of the readings below were taken at Pinehurst's own scale — its own ~183-day season between 28°F freezes, the 637 acres it covers and 528 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Pinehurst's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Pinehurst's own 28°F hard-freeze dates, about Apr 18 and Oct 18 and the ~183-day span between themNOAA 1991–2020 Climate Normals
- 528 documented contamination sites on the federal record near Pinehurst, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Pinehurst's boundary and the 637 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~183-day seasonGrowable Ground crop-matching engine
- The ecoregion at Pinehurst's own centroid, the Northern RockiesUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Pinehurst's 637 acres read through its county's SSURGO summaryfrom Shoshone County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Shoshone 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 Shoshone County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Pinehurst's 637 acreswhy one lot differs from the next →
- Which side of Pinehurst you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 637 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 Pinehurst-wide figureread your own land →
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