Pirtleville, Arizona, sits in USDA hardiness zone 8a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Crops well matched to these conditions include cabbage, fig, california poppy, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Pirtleville, 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 Pirtleville 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 Pirtleville — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Pirtleville — the short answer
Pirtleville, Arizona: USDA zone 8a, about 257 days between hard freezes, across 1K acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~257
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K 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 8a is Pirtleville's average, not your lot's — a low corner or a tree line moves it. Against Pirtleville's 257-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Pirtleville
Each reading below is measured for Pirtleville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredPirtleville runs about 257 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
MeasuredPirtleville sits in USDA hardiness zone 8a.
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 Pirtleville is in
Pirtleville sits in the Madrean Archipelago — EPA Level III, inside the wider Southern Semi-arid Highlands. That is read at Pirtleville's own centroid rather than borrowed from Cochise County.
What Grows in Pirtleville
Every plant below cleared Pirtleville's own zone 8a and its 257-day season. Each card opens that plant's Arizona profile. How we score.
Is it too late to plant in Pirtleville?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 6 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 18 — 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.
Documented around Pirtleville
Survey cells within 31 miles of Pirtleville checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 461 miles off. What to watch for.
What's on the federal record near Pirtleville
Closest first, within ~10 miles of Pirtleville. Listing isn't leaking, and distance isn't exposure.
- DOUGLAS CITY OFPFAS · 900 ft
- KDAP RADIO STATIONUnderground Storage Tanks · 0.6 mi
- APSUnderground Storage Tanks · 0.7 mi
- PAISANO HYDROMET CORP LTDUnderground Storage Tanks · 0.7 mi
- VACANT LOTUnderground Storage Tanks · 0.8 mi
- SPEEDWAY STORE #2976Underground Storage Tanks · 0.8 mi
- DOUGLAS TURBINESUnderground Storage Tanks · 0.8 mi
- KDAP INC STUDIOUnderground Storage Tanks · 0.8 mi
- JENNEY FLEIGHT LINE INCUnderground Storage Tanks · 0.9 mi
- CIRCLE K #880Underground Storage Tanks · 0.9 mi
- CITY OF DOUGLAS - POLICE DEPARTMENTUnderground Storage Tanks · 1.0 mi
- DOUGLAS DIESELUnderground Storage Tanks · 1.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Pirtleville'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 Pirtleville.
Total Sites
108
within ~10 miles of Pirtleville
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Pirtleville
Severity Distribution
within ~10 miles of Pirtleville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Pirtleville, Nitrate runs higher than the national average — 34 sites within ~10 miles of Pirtleville. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
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 Pirtleville
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 Pirtleville average
Your land is one point inside Pirtleville
Everything above resolves to Pirtleville as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Pirtleville Average
Pirtleville Average
- ●USDA Zones 8a, averaged across Pirtleville
- ●One soil character for all of Pirtleville
- ●Frost dates read at Pirtleville's scale: Mar 6 to Nov 18
YOUR Parcel
- ✓Your exact zone, not Pirtleville's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Pirtleville
Pull a site-specific report for your exact address in Pirtleville, Arizona — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Pirtleville averages can't show:
We read public map data around Pirtleville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Pirtleville average
How we know this about Pirtleville
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 Pirtleville’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 Pirtleville
When does frost risk typically end in Pirtleville?
The last hard freeze (28°F) in Pirtleville typically lands around Mar 6, 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 27.
When is the first frost in Pirtleville?
The first hard freeze (28°F) in Pirtleville typically arrives around Nov 18, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 4, so the watching starts about Oct 19 — about 257 days after the spring freeze cleared.
How long is the growing season in Pirtleville?
Measured between 28°F hard freezes, Pirtleville sees about 257 frost-free days — roughly Mar 6 through Nov 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 27 to Nov 4, about 222 days.
Is the soil safe to grow vegetables in Pirtleville?
The federal record around Pirtleville is a meaningful one — 108 documented sites, mostly Underground Storage Tanks entries (60), the nearest PFAS record about 0.2 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Pirtleville?
From about Oct 19 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 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 Nov 18. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Pirtleville's scale — its 8a band and its 257-day season. Your yard writes its own version of Pirtleville'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 Pirtleville’s own scale
7 of the readings below were taken at Pirtleville's own scale — its own ~257-day season between 28°F freezes, the 1,192 acres it covers and 108 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Pirtleville's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Pirtleville's own 28°F hard-freeze dates, about Mar 6 and Nov 18 and the ~257-day span between themNOAA 1991–2020 Climate Normals
- 108 documented contamination sites on the federal record near Pirtleville, the closest PFAS record about 0.2 miles out from the town centreFederal environmental registers
- Pirtleville's boundary and the 1,192 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~257-day seasonGrowable Ground crop-matching engine
- The ecoregion at Pirtleville's own centroid, the Madrean ArchipelagoUS EPA Level III Ecoregions
- Lanternfly survey cells around Pirtleville checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Pirtleville's 1,192 acres read through its county's SSURGO summaryfrom Cochise County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Cochise County
- The growing challenges every Arizona grower plans around — written at state scale, so they stay on the state guidefrom Arizona
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Cochise County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Pirtleville's 1,192 acreswhy one lot differs from the next →
- Which side of Pirtleville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,192 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest PFAS 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 Pirtleville-wide figureread your own land →
More in Arizona
Growing regions