Crestline, California, sits in USDA hardiness zone 8b — a zone band wide enough that plant choice, not possibility, is the interesting question.
The conditions favor cabbage, fig, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Crestline, 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 Crestline 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 Crestline — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Crestline — the short answer
Crestline, California: USDA zone 8b, about 233 days between hard freezes, across 9K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 23
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~233
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 9K 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 Crestline's average, not your lot's — a low corner or a tree line moves it. Against Crestline's 233-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Crestline
Each reading below is measured for Crestline itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCrestline runs about 233 days between hard freezes — 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
MeasuredCrestline 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 Crestline is in
Crestline sits in the Southern California Mountains — EPA Level III, inside the wider Mediterranean California. That is read at Crestline'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 Crestline
Every plant below cleared Crestline's own zone 8b and its 233-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Crestline?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 7; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 23 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near Crestline
Closest first, within ~10 miles of Crestline. Listing isn't leaking, and distance isn't exposure.
- 002N004W23D001SNitrate · 0.7 mi
- THOUSAND PINES CHRISTIAN CAMP & CONFERENCE CENTERBrownfields · 0.7 mi
- PILOT ROCK CONSERVATION CAMPBrownfields · 0.7 mi
- MARK MATEJKABrownfields · 0.8 mi
- RIM OF THE WORLD SCHOOL DISTRICTBrownfields · 0.8 mi
- MOUNTAIN MAGIC MOTORSBrownfields · 0.8 mi
- MAGIC MOUNTAIN MOTORSBrownfields · 0.8 mi
- CRESTLINE VILLAGE CWD - DIVISION 10PFAS · 0.8 mi
- CHEVRON STATION 9 1022Brownfields · 0.8 mi
- SNYDERS TIRE WORKSBrownfields · 0.8 mi
- Crestline Market, Inc.Underground Storage Tanks · 0.8 mi
- BURCH, WILLIAMBrownfields · 0.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Crestline'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 Crestline.
Sources Checked
within ~10 miles of Crestline
Severity Distribution
within ~10 miles of Crestline
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Crestline, Brownfields runs higher than the national average — 785 sites within ~10 miles of Crestline. 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.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Crestline
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 Crestline average
Your land is one point inside Crestline
Everything above resolves to Crestline as a whole — one PHZM band and one 28°F frost record, read across 9K 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 Crestline Average
Crestline Average
- ●USDA Zones 8b, averaged across Crestline
- ●One soil character for all of Crestline
- ●Frost dates read at Crestline's scale: Apr 4 to Nov 23
YOUR Parcel
- ✓Your exact zone, not Crestline's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Crestline
Pull a site-specific report for your exact address in Crestline, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Crestline averages can't show:
We read public map data around Crestline — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Crestline average
How we know this about Crestline
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 Crestline’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 Crestline
When does frost risk typically end in Crestline?
The last hard freeze (28°F) in Crestline typically lands around Apr 4, 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 25.
When is the first frost in Crestline?
The first hard freeze (28°F) in Crestline typically arrives around Nov 23, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 9, so the watching starts about Oct 24 — about 233 days after the spring freeze cleared.
How long is the growing season in Crestline?
Measured between 28°F hard freezes, Crestline sees about 233 frost-free days — roughly Apr 4 through Nov 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 25 to Nov 9, about 198 days.
Is the soil safe to grow vegetables in Crestline?
The federal record around Crestline is a meaningful one — 1,184 documented sites, mostly Brownfields entries (785), the nearest Nitrate record about 0.7 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 Crestline?
From about Oct 24 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 23 (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 23. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Crestline's scale — its 8b band and its 233-day season. Your yard writes its own version of Crestline'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 Crestline’s own scale
6 of the readings below were taken at Crestline's own scale — its own ~233-day season between 28°F freezes, the 8,899 acres it covers and 1,184 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Crestline's own USDA hardiness band, zones 8bUSDA PHZM 2023
- Crestline's own 28°F hard-freeze dates, about Apr 4 and Nov 23 and the ~233-day span between themNOAA 1991–2020 Climate Normals
- 1,184 documented contamination sites on the federal record near Crestline, the closest Nitrate record about 0.7 miles out from the town centreFederal environmental registers
- Crestline's boundary and the 8,899 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~233-day seasonGrowable Ground crop-matching engine
- Crestline 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 Crestline's 8,899 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 Crestline's 8,899 acreswhy one lot differs from the next →
- Which side of Crestline you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 8,899 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 0.7 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 Crestline-wide figureread your own land →