Red Rock, Arizona, sits in USDA hardiness zones 8a-9a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Reliable performers under these conditions include palo verde, citrus, jalapeno, and date palm; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Red Rock, 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 Red Rock lot. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Quick Facts
USDA Zones
8a-9a
Last Frost (state avg.)
Jan 15 - May 1
First Frost (state avg.)
Oct 15 - Dec 15
Town Area
30K acres
Hardiness Zone Range
Growing Season
Zone maps are averages across Red Rock. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil varies lot by lot — soil types explained.
What Grows in Red Rock
Plants matched to Red Rock's USDA zones 8a-9a — each links to its full growing profile.
Growing Challenges in Arizona
What an experienced grower plans around here — each one has a move.
Extreme heat exceeding 110F stresses most plants
Desert gardens run on winter: plant to the October-March windows and give the summer holdouts afternoon shade.
Minimal rainfall requires drip irrigation
Drip plus a deep mulch layer is the desert baseline — it waters roots, not air, and cuts evaporation dramatically.
Caliche hardpan prevents root penetration without breaking through
Where caliche won't break, build up instead — a deep raised bed gives roots the depth the ground refuses.
For cultivar selection, pest pressure, and planting-time guidance specific to Arizona, the University of Arizona Cooperative Extension is the authoritative local source.
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Total Sites
68
within ~10 miles of Red Rock
Risk Level
Moderate
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Red Rock
Severity Distribution
within ~10 miles of Red Rock
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Red Rock, two things run higher than the national average — Nitrate (36 sites) and Mining (6 sites). That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
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 well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Red Rock
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Your Specific Parcel Matters
Red Rock Average
- ●USDA Zones 8a-9a
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Red Rock
Pull a site-specific report for your exact address in Red Rock, Arizona — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Key Growing Facts for Red Rock, Arizona
- USDA Hardiness Zones: 8a-9a (USDA PHZM 2023)
- Last Spring Frost (state avg.): Jan 15 - May 1 (NOAA 30-Year Climate Normals)
- First Fall Frost (state avg.): Oct 15 - Dec 15 (NOAA 30-Year Climate Normals)
- Land Area: 30K acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. Boundaries: US Census TIGER/Line 2025.
Frequently Asked Questions
What hardiness zone is Red Rock, Arizona?
Red Rock sits in USDA hardiness zones 8a-9a, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
When does frost risk typically end in Red Rock?
Red Rock follows Arizona's statewide frost window: last spring frost around Jan 15 - May 1 and first fall frost around Oct 15 - Dec 15, per NOAA 30-year climate normals (1991–2020). Frost dates shift with elevation and local microclimate, so watch your own site's cold pockets.
What vegetables grow in Red Rock?
Red Rock's zones 8a-9a support a wide range — strong performers include Palo Verde, Citrus, Jalapeno, Date Palm, and Prickly Pear. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Which hardiness zone is Red Rock, really?
Officially, Red Rock sits in USDA zones 8a-9a (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
Is the soil safe to grow vegetables in Red Rock?
The federal record around Red Rock shows 68 documented sites — 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 Red Rock?
As the season closes around Arizona's first fall frost near Oct 15 - Dec 15 (NOAA 30-year climate normals (1991–2020)), a few moves buy time: cover tender plants with floating row cover or an old sheet on still, clear nights, water the soil the afternoon before a freeze so it holds warmth overnight, and harvest frost-tender crops like tomatoes, peppers, and basil before the first hard night. Hardy greens and root crops shrug off light frost and often sweeten after it, so leave them in.
Everything on this page is a Red Rock average. Your yard writes its own version — we read soil, sun, drainage, and frost at your exact address. Try it for 14 days — no card required.
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