Miracle Valley, Arizona, sits in USDA hardiness zone 8b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Well-matched crops include cabbage, fig, 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 Miracle Valley, 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 Miracle Valley 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 Miracle Valley — soil, climate, flood, and parcel records. How we handle your address.
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Miracle Valley — the short answer
Miracle Valley, Arizona: USDA zone 8b, about 269 days between hard freezes, across 349 acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~269
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 349 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 8b is Miracle Valley's average, not your lot's — a low corner or a tree line moves it. Against Miracle Valley's 269-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Miracle Valley
Each reading below is measured for Miracle Valley itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMiracle Valley runs about 269 days between hard freezes — 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
MeasuredMiracle Valley sits in USDA hardiness zone 8b.
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 Miracle Valley is in
Miracle Valley sits in the Madrean Archipelago — EPA Level III, inside the wider Southern Semi-arid Highlands. That is read at Miracle Valley's own centroid rather than borrowed from Cochise County.
What Grows in Miracle Valley
Every plant below cleared Miracle Valley's own zone 8b and its 269-day season. Each card opens that plant's Arizona profile. How we score.
Is it too late to plant in Miracle Valley?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 3; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 3 (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.
Documented around Miracle Valley
Survey cells within 31 miles of Miracle Valley checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 428 miles off. What to watch for.
What's on the federal record near Miracle Valley
Closest first, within ~10 miles of Miracle Valley. Listing isn't leaking, and distance isn't exposure.
- CANYON GENERAL INCUnderground Storage Tanks · 1400 ft
- D-23-22 31DDANitrate · 1900 ft
- THE WHATNOT SHOPUnderground Storage Tanks · 2100 ft
- PALOMINAS COUNTRY STOREUnderground Storage Tanks · 2400 ft
- PALOMINAS ELEMENTARY SCHOOLUnderground Storage Tanks · 1.4 mi
- PALOMINAS FARMSUnderground Storage Tanks · 1.6 mi
- PALOMINAS TRADING POSTUnderground Storage Tanks · 1.6 mi
- HEREFORD-PALOMINAS AIR STRIPUnderground Storage Tanks · 2.2 mi
- D-23-22 28DBCNitrate · 2.4 mi
- D-24-21 03AABNitrate · 2.6 mi
- D-23-22 34CBD2Nitrate · 2.7 mi
- D-23-22 21CDANitrate · 2.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Miracle Valley'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 Miracle Valley.
Total Sites
78
within ~10 miles of Miracle Valley
Risk Level
High
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Miracle Valley
Severity Distribution
within ~10 miles of Miracle Valley
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Miracle Valley, two things run higher than the national average within ~10 miles of Miracle Valley — Mining (32 sites) and Nitrate (28 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 Miracle Valley
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 Miracle Valley average
Your land is one point inside Miracle Valley
Everything above resolves to Miracle Valley as a whole — one PHZM band and one 28°F frost record, read across 349 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 Miracle Valley Average
Miracle Valley Average
- ●USDA Zones 8b, averaged across Miracle Valley
- ●One soil character for all of Miracle Valley
- ●Frost dates read at Miracle Valley's scale: Mar 3 to Nov 27
YOUR Parcel
- ✓Your exact zone, not Miracle Valley's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Miracle Valley
Pull a site-specific report for your exact address in Miracle Valley, Arizona — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Miracle Valley averages can't show:
We read public map data around Miracle Valley — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Miracle Valley average
How we know this about Miracle Valley
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 Miracle Valley’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 Miracle Valley
When does frost risk typically end in Miracle Valley?
The last hard freeze (28°F) in Miracle Valley typically lands around Mar 3, 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 24.
When is the first frost in Miracle Valley?
The first hard freeze (28°F) in Miracle Valley 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 269 days after the spring freeze cleared.
How long is the growing season in Miracle Valley?
Measured between 28°F hard freezes, Miracle Valley sees about 269 frost-free days — roughly Mar 3 through Nov 27, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 24 to Nov 13, about 234 days.
Is the soil safe to grow vegetables in Miracle Valley?
The federal record around Miracle Valley runs heavier than most — 78 documented sites, mostly Mining entries (32), 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 I protect my plants from frost in Miracle Valley?
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 Miracle Valley's scale — its 8b band and its 269-day season. Your yard writes its own version of Miracle Valley'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 Miracle Valley’s own scale
7 of the readings below were taken at Miracle Valley's own scale — its own ~269-day season between 28°F freezes, the 349 acres it covers and 78 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Miracle Valley's own USDA hardiness band, zones 8bUSDA PHZM 2023
- Miracle Valley's own 28°F hard-freeze dates, about Mar 3 and Nov 27 and the ~269-day span between themNOAA 1991–2020 Climate Normals
- 78 documented contamination sites on the federal record near Miracle Valley, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Miracle Valley's boundary and the 349 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~269-day seasonGrowable Ground crop-matching engine
- The ecoregion at Miracle Valley's own centroid, the Madrean ArchipelagoUS EPA Level III Ecoregions
- Lanternfly survey cells around Miracle Valley 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 Miracle Valley's 349 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 Miracle Valley's 349 acreswhy one lot differs from the next →
- Which side of Miracle Valley you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 349 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 Miracle Valley-wide figureread your own land →