Concho, Arizona, sits in USDA hardiness zone 7a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Well-matched crops include cabbage, pawpaw, california poppy, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Concho, 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 Concho 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 Concho — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Concho — the short answer
Concho, Arizona: USDA zone 7a, about 188 days between hard freezes, across 294 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 22
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~188
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 294 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 Concho's average, not your lot's — a low corner or a tree line moves it. Against Concho's 188-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Concho
Each reading below is measured for Concho itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredConcho runs about 188 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
MeasuredConcho 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 Concho is in
Concho sits in the Arizona/New Mexico Plateau — EPA Level III, inside the wider North American Deserts. That is read at Concho's own centroid rather than borrowed from Apache County.
What Grows in Concho
Every plant below cleared Concho's own zone 7a and its 188-day season. Each card opens that plant's Arizona profile. How we score.
Is it too late to plant in Concho?
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 Mar 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 22 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 27 — 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 Concho
Closest first, within ~10 miles of Concho. Listing isn't leaking, and distance isn't exposure.
- A-12-26 05ADANitrate · 300 ft
- A-12-26 04BBCNitrate · 600 ft
- BURN OUT CAFEUnderground Storage Tanks · 1400 ft
- CONCHO GENERAL STOREUnderground Storage Tanks · 1600 ft
- SUPERIOR PROPANEUnderground Storage Tanks · 1900 ft
- ADOT - CONCHO MAINTENANCE YARDUnderground Storage Tanks · 2000 ft
- CHINLE SCHOOLS TRANSPORTATION NNBrownfields · 2.2 mi
- NAVAJO TRIBAL UTILITY AUTHORITY NTUA LABBrownfields · 2.3 mi
- CONCHO REMOTEUnderground Storage Tanks · 2.6 mi
- JIFFY STORE #426Underground Storage Tanks · 2.6 mi
- GTSW 4246-056 ST JOHNS CONCHOUnderground Storage Tanks · 2.6 mi
- A-12-26 15BCCNitrate · 2.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Concho'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 Concho.
Sources Checked
within ~10 miles of Concho
Severity Distribution
within ~10 miles of Concho
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Concho, Nitrate runs higher than the national average — 62 sites within ~10 miles of Concho. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Concho
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 Concho average
Your land is one point inside Concho
Everything above resolves to Concho as a whole — one PHZM band and one 28°F frost record, read across 294 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 Concho Average
Concho Average
- ●USDA Zones 7a, averaged across Concho
- ●One soil character for all of Concho
- ●Frost dates read at Concho's scale: Apr 22 to Oct 27
YOUR Parcel
- ✓Your exact zone, not Concho's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Concho
Pull a site-specific report for your exact address in Concho, Arizona — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Concho averages can't show:
We read public map data around Concho — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Concho average
How we know this about Concho
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 Concho’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 Concho
When does frost risk typically end in Concho?
The last hard freeze (28°F) in Concho typically lands around Apr 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 May 13.
When is the first frost in Concho?
The first hard freeze (28°F) in Concho typically arrives around Oct 27, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 13, so the watching starts about Sep 27 — about 188 days after the spring freeze cleared.
How long is the growing season in Concho?
Measured between 28°F hard freezes, Concho sees about 188 frost-free days — roughly Apr 22 through Oct 27, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 13 to Oct 13, about 153 days.
Is the soil safe to grow vegetables in Concho?
The federal record around Concho shows 74 documented sites, mostly Nitrate entries (62), the nearest Nitrate record under a tenth of a mile 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 Concho?
From about Sep 27 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 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 Oct 27. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Concho's scale — its 7a band and its 188-day season. Your yard writes its own version of Concho'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 Concho’s own scale
6 of the readings below were taken at Concho's own scale — its own ~188-day season between 28°F freezes, the 294 acres it covers and 74 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Concho's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Concho's own 28°F hard-freeze dates, about Apr 22 and Oct 27 and the ~188-day span between themNOAA 1991–2020 Climate Normals
- 74 documented contamination sites on the federal record near Concho, the closest Nitrate record under a tenth of a mile out from the town centreFederal environmental registers
- Concho's boundary and the 294 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~188-day seasonGrowable Ground crop-matching engine
- The ecoregion at Concho's own centroid, the Arizona/New Mexico PlateauUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Concho's 294 acres read through its county's SSURGO summaryfrom Apache County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Apache 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 Apache County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Concho's 294 acreswhy one lot differs from the next →
- Which side of Concho you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 294 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record under a tenth of a mile 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 Concho-wide figureread your own land →
More in Arizona
Wider growing context
What grows across ArizonaConcho sits outside our named growing regions, so Arizona as a whole is its closest context here.
Nearby growing guides