Quartz Hill, California, sits in USDA hardiness zone 8b — 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 Quartz Hill, 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 Quartz Hill 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 Quartz Hill — soil, climate, flood, and parcel records. How we handle your address.
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Quartz Hill — the short answer
Quartz Hill, California: USDA zone 8b, about 264 days between hard freezes, across 2K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 26
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 17
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~264
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 2K 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 Quartz Hill's average, not your lot's — a low corner or a tree line moves it. Against Quartz Hill's 264-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Quartz Hill
Each reading below is measured for Quartz Hill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredQuartz Hill runs about 264 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
MeasuredQuartz Hill 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 Quartz Hill is in
Quartz Hill sits in the Mojave Basin and Range — EPA Level III, inside the wider North American Deserts. That is read at Quartz Hill's own centroid, and it is not what its county reads: Los Angeles County is mostly Southern California/Northern Baja Coast. The wider page above you is answering a different question about different ground.
What Grows in Quartz Hill
Every plant below cleared Quartz Hill's own zone 8b and its 264-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Quartz Hill?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Jan 29; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 26 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 17 — long-season crops need about 90 days of runway, quick greens only 30. In a climate this gentle, “too late” hardly applies — the question becomes which crops prefer the cooler months ahead.
What's on the federal record near Quartz Hill
Closest first, within ~10 miles of Quartz Hill. Listing isn't leaking, and distance isn't exposure.
- QUARTZ HILL 76Underground Storage Tanks · 750 ft
- QUARTZ HILL 76Brownfields · 750 ft
- MATT ANDERSONBrownfields · 850 ft
- QUARTZ HILL TIRES AUTO REPAIRBrownfields · 900 ft
- O'REILLY AUTO PARTS #6216Brownfields · 1000 ft
- ROAD MAINT YARD #551Underground Storage Tanks · 1000 ft
- CORKYS AUTO REPAIR INCBrownfields · 1100 ft
- ANTELOPE VALLEY MUFFLER COBrownfields · 1200 ft
- PREMIER AUTOMOTIVE & TIREBrownfields · 1200 ft
- BUDGET TIRES AND SERVICE CENTERSBrownfields · 1300 ft
- LACDPW RMD - RD 551Brownfields · 1300 ft
- CIRCLE K STORE #748Brownfields · 1600 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Quartz Hill'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 Quartz Hill.
Total Sites
1,411
within ~10 miles of Quartz Hill
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Quartz Hill
Severity Distribution
within ~10 miles of Quartz Hill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Quartz Hill, Brownfields runs higher than the national average — 1,003 sites within ~10 miles of Quartz Hill. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Quartz Hill
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 Quartz Hill average
Your land is one point inside Quartz Hill
Everything above resolves to Quartz Hill as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Quartz Hill Average
Quartz Hill Average
- ●USDA Zones 8b, averaged across Quartz Hill
- ●One soil character for all of Quartz Hill
- ●Frost dates read at Quartz Hill's scale: Feb 26 to Nov 17
YOUR Parcel
- ✓Your exact zone, not Quartz Hill's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Quartz Hill
Pull a site-specific report for your exact address in Quartz Hill, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Quartz Hill averages can't show:
We read public map data around Quartz Hill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Quartz Hill average
How we know this about Quartz Hill
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 Quartz Hill’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 Quartz Hill
When does frost risk typically end in Quartz Hill?
The last hard freeze (28°F) in Quartz Hill typically lands around Feb 26, 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 19.
When is the first frost in Quartz Hill?
The first hard freeze (28°F) in Quartz Hill typically arrives around Nov 17, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 3, so the watching starts about Oct 18 — about 264 days after the spring freeze cleared.
How long is the growing season in Quartz Hill?
Measured between 28°F hard freezes, Quartz Hill sees about 264 frost-free days — roughly Feb 26 through Nov 17, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 19 to Nov 3, about 229 days.
Is the soil safe to grow vegetables in Quartz Hill?
The federal record around Quartz Hill is a meaningful one — 1,411 documented sites, mostly Brownfields entries (1,003), the nearest Underground Storage Tanks record about 0.1 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 Quartz Hill?
From about Oct 18 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 17 (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 17. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Quartz Hill's scale — its 8b band and its 264-day season. Your yard writes its own version of Quartz Hill'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 Quartz Hill’s own scale
6 of the readings below were taken at Quartz Hill's own scale — its own ~264-day season between 28°F freezes, the 2,408 acres it covers and 1,411 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Quartz Hill's own USDA hardiness band, zones 8bUSDA PHZM 2023
- Quartz Hill's own 28°F hard-freeze dates, about Feb 26 and Nov 17 and the ~264-day span between themNOAA 1991–2020 Climate Normals
- 1,411 documented contamination sites on the federal record near Quartz Hill, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Quartz Hill's boundary and the 2,408 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~264-day seasonGrowable Ground crop-matching engine
- Quartz Hill sits in the Mojave Basin and Range — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Quartz Hill's 2,408 acres read through its county's SSURGO summaryfrom Los Angeles County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Los Angeles County
- The growing challenges every California grower plans around — written at state scale, so they stay on the state guidefrom California
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Los Angeles County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Quartz Hill's 2,408 acreswhy one lot differs from the next →
- Which side of Quartz Hill you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,408 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Quartz Hill-wide figureread your own land →