Lytle Creek, California, sits in USDA hardiness zone 9a — 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 artichoke, fig, california poppy, and cabbage — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Lytle Creek, 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 Lytle Creek 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 Lytle Creek — soil, climate, flood, and parcel records. How we handle your address.
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Lytle Creek — the short answer
Lytle Creek, California: USDA zone 9a, about 281 days between hard freezes, across 4K acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Dec 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~281
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 4K 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 9a is Lytle Creek's average, not your lot's — a low corner or a tree line moves it. Against Lytle Creek's 281-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Lytle Creek
Each reading below is measured for Lytle Creek itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredLytle Creek runs about 281 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
MeasuredLytle Creek sits in USDA hardiness zone 9a.
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 Lytle Creek is in
Lytle Creek sits in the Southern California Mountains — EPA Level III, inside the wider Mediterranean California. That is read at Lytle Creek's own centroid, and it is not what its county reads: San Bernardino County is mostly Mojave Basin and Range. The wider page above you is answering a different question about different ground.
What Grows in Lytle Creek
Every plant below cleared Lytle Creek's own zone 9a and its 281-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Lytle Creek?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 5 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 11 — 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 Lytle Creek
Closest first, within ~10 miles of Lytle Creek. Listing isn't leaking, and distance isn't exposure.
- MOUNTAIN LAKES RESORTBrownfields · 0.5 mi
- USDOI BR NEEDLES FIELD OFFICEBrownfields · 0.8 mi
- LYTLE CREEK WASTE WATER TREATMENT PLANTBrownfields · 0.9 mi
- PACIFIC BELLBrownfields · 0.9 mi
- 002N006W27G001SNitrate · 1.3 mi
- SAN BERNARDINO COUNTY DEHSBrownfields · 1.9 mi
- USDA USFS R05 LYTLE CREEK RANGER STATIONBrownfields · 1.9 mi
- USDA USFS R05 SAN BERNARDINO COUNTY NATIONAL FORESTBrownfields · 1.9 mi
- Califrnia-Hercules MillsiteMining · 2.2 mi
- California-Hercules MineMining · 2.5 mi
- Blew JordamMining · 3.2 mi
- NEW CINGULAR WIRELESS PCS LLCBrownfields · 3.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Lytle Creek'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 Lytle Creek.
Sources Checked
within ~10 miles of Lytle Creek
Severity Distribution
within ~10 miles of Lytle Creek
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Lytle Creek, two things run higher than the national average within ~10 miles of Lytle Creek — Brownfields (441 sites) and Superfund (9 sites). That's not a problem with your land — it's information about it.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Lytle Creek
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 Lytle Creek average
Your land is one point inside Lytle Creek
Everything above resolves to Lytle Creek as a whole — one PHZM band and one 28°F frost record, read across 4K 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 Lytle Creek Average
Lytle Creek Average
- ●USDA Zones 9a, averaged across Lytle Creek
- ●One soil character for all of Lytle Creek
- ●Frost dates read at Lytle Creek's scale: Mar 5 to Dec 11
YOUR Parcel
- ✓Your exact zone, not Lytle Creek's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Lytle Creek
Pull a site-specific report for your exact address in Lytle Creek, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Lytle Creek averages can't show:
We read public map data around Lytle Creek — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Lytle Creek average
How we know this about Lytle Creek
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 Lytle Creek’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 Lytle Creek
When does frost risk typically end in Lytle Creek?
The last hard freeze (28°F) in Lytle Creek typically lands around Mar 5, 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 26.
When is the first frost in Lytle Creek?
The first hard freeze (28°F) in Lytle Creek typically arrives around Dec 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 27, so the watching starts about Nov 11 — about 281 days after the spring freeze cleared.
How long is the growing season in Lytle Creek?
Measured between 28°F hard freezes, Lytle Creek sees about 281 frost-free days — roughly Mar 5 through Dec 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 26 to Nov 27, about 246 days.
Is the soil safe to grow vegetables in Lytle Creek?
The federal record around Lytle Creek is a meaningful one — 592 documented sites, mostly Brownfields entries (441), the nearest Brownfields record about 0.5 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 Lytle Creek?
From about Nov 11 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 Dec 11 (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 Dec 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Lytle Creek's scale — its 9a band and its 281-day season. Your yard writes its own version of Lytle Creek'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 Lytle Creek’s own scale
6 of the readings below were taken at Lytle Creek's own scale — its own ~281-day season between 28°F freezes, the 3,852 acres it covers and 592 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Lytle Creek's own USDA hardiness band, zones 9aUSDA PHZM 2023
- Lytle Creek's own 28°F hard-freeze dates, about Mar 5 and Dec 11 and the ~281-day span between themNOAA 1991–2020 Climate Normals
- 592 documented contamination sites on the federal record near Lytle Creek, the closest Brownfields record about 0.5 miles out from the town centreFederal environmental registers
- Lytle Creek's boundary and the 3,852 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~281-day seasonGrowable Ground crop-matching engine
- Lytle Creek sits in the Southern California Mountains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Lytle Creek's 3,852 acres read through its county's SSURGO summaryfrom San Bernardino County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom San Bernardino 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 San Bernardino County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Lytle Creek's 3,852 acreswhy one lot differs from the next →
- Which side of Lytle Creek you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,852 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Lytle Creek-wide figureread your own land →