Clacks Canyon, Arizona, sits in USDA hardiness zone 8b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Growers here do well with cabbage, fig, california poppy, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Clacks Canyon, 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 Clacks Canyon 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 Clacks Canyon — soil, climate, flood, and parcel records. How we handle your address.
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Clacks Canyon — the short answer
Clacks Canyon, Arizona: USDA zone 8b, about 242 days between hard freezes, across 2K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 21
- Mohave County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 18
- Mohave County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~242
- Mohave County normal — NOAA 1991–2020, nearest to this town
- Town area
- 2K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Mohave County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Clacks Canyon's average, not your lot's — a low corner or a tree line moves it. Against Clacks Canyon's 242-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Clacks Canyon
Each reading below is measured for Clacks Canyon itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsClacks Canyon runs about 242 days between hard freezes (read from Mohave County, the closest normal to Clacks Canyon) — 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
MeasuredClacks Canyon 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 Clacks Canyon is in
Clacks Canyon sits in the Mojave Basin and Range — EPA Level III, inside the wider North American Deserts. That is read at Clacks Canyon's own centroid rather than borrowed from Mohave County.
What Grows in Clacks Canyon
Every plant below cleared Clacks Canyon's own zone 8b and its 242-day season. Each card opens that plant's Arizona profile. How we score.
Is it too late to plant in Clacks Canyon?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 21 (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. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
Documented around Clacks Canyon
Survey cells within 31 miles of Clacks Canyon checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 228 miles off. What to watch for.
What's on the federal record near Clacks Canyon
Closest first, within ~10 miles of Clacks Canyon. Listing isn't leaking, and distance isn't exposure.
- B-21-17 10DDCNitrate · 0.5 mi
- B-21-17H03CDA3Nitrate · 1.1 mi
- TRANSWESTERN PIPELINE ST 1Underground Storage Tanks · 1.5 mi
- AG&F - REGION IIUnderground Storage Tanks · 1.6 mi
- B-21-17 01CABNitrate · 1.6 mi
- KINGMAN TIREUnderground Storage Tanks · 1.6 mi
- D&J SERVICE CENTERUnderground Storage Tanks · 1.7 mi
- WEST COAST CHEVRONUnderground Storage Tanks · 1.7 mi
- GAS UP SHELLUnderground Storage Tanks · 1.7 mi
- RAY BELL #454 - LIBERTY BELLUnderground Storage Tanks · 1.8 mi
- ARNOLD INVESTMENTS/LEON STATIONUnderground Storage Tanks · 1.8 mi
- WESTSIDE MOBILUnderground Storage Tanks · 1.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Clacks Canyon'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 Clacks Canyon.
Total Sites
402
within ~10 miles of Clacks Canyon
Risk Level
High
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Clacks Canyon
Severity Distribution
within ~10 miles of Clacks Canyon
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Clacks Canyon, Mining runs higher than the national average — 117 sites within ~10 miles of Clacks Canyon. 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.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Clacks Canyon
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 Clacks Canyon average
Your land is one point inside Clacks Canyon
Everything above resolves to Clacks Canyon as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Mohave County’s record because no 30-year normal resolves at this town’s own centroid. 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 Clacks Canyon Average
Clacks Canyon Average
- ●USDA Zones 8b, averaged across Clacks Canyon
- ●One soil character for all of Clacks Canyon
- ●Frost dates read at Clacks Canyon's scale: Mar 21 to Nov 18
YOUR Parcel
- ✓Your exact zone, not Clacks Canyon's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Clacks Canyon
Pull a site-specific report for your exact address in Clacks Canyon, Arizona — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Clacks Canyon averages can't show:
We read public map data around Clacks Canyon — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Clacks Canyon average
How we know this about Clacks Canyon
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 Mohave County’s record, because none resolves here; 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 Clacks Canyon
When does frost risk typically end in Clacks Canyon?
The last hard freeze (28°F) in Clacks Canyon typically lands around Mar 21, 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 Apr 11.
When is the first frost in Clacks Canyon?
The first hard freeze (28°F) in Clacks Canyon 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 242 days after the spring freeze cleared.
How long is the growing season in Clacks Canyon?
Measured between 28°F hard freezes, Clacks Canyon sees about 242 frost-free days — roughly Mar 21 through Nov 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 11 to Nov 4, about 207 days.
Is the soil safe to grow vegetables in Clacks Canyon?
The federal record around Clacks Canyon runs heavier than most — 402 documented sites, mostly Underground Storage Tanks entries (171), the nearest Nitrate record about 0.5 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 Clacks Canyon?
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 Clacks Canyon's scale — its 8b band and its 242-day season. Your yard writes its own version of Clacks Canyon'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 Clacks Canyon’s own scale
6 of the readings below were taken at Clacks Canyon's own scale — the 2,126 acres it covers and 402 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Clacks Canyon's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 402 documented contamination sites on the federal record near Clacks Canyon, the closest Nitrate record about 0.5 miles out from the town centreFederal environmental registers
- Clacks Canyon's boundary and the 2,126 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~242-day seasonGrowable Ground crop-matching engine
- The ecoregion at Clacks Canyon's own centroid, the Mojave Basin and RangeUS EPA Level III Ecoregions
- Lanternfly survey cells around Clacks Canyon checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Clacks Canyon has no normal of its own, so its county's is the closest measured readfrom Mohave County
- Soil character — no town-scale survey exists, so Clacks Canyon's 2,126 acres read through its county's SSURGO summaryfrom Mohave County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Mohave 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 Mohave County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Clacks Canyon's 2,126 acreswhy one lot differs from the next →
- Which side of Clacks Canyon you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,126 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 0.5 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 Clacks Canyon-wide figureread your own land →
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