Squirrel Mountain Valley, 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.
These conditions suit artichoke, fig, california poppy, and cabbage — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Squirrel Mountain Valley, 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 Squirrel Mountain Valley 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 Squirrel Mountain Valley — soil, climate, flood, and parcel records. How we handle your address.
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Squirrel Mountain Valley — the short answer
Squirrel Mountain Valley, California: USDA zone 9a, about 284 days between hard freezes, across 1K acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Dec 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~284
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K 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 Squirrel Mountain Valley's average, not your lot's — a low corner or a tree line moves it. Against Squirrel Mountain Valley's 284-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Squirrel Mountain Valley
Each reading below is measured for Squirrel Mountain Valley itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSquirrel Mountain Valley runs about 284 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
MeasuredSquirrel Mountain Valley 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 Squirrel Mountain Valley is in
Squirrel Mountain Valley sits in the Central California Foothills and Coastal Mountains — EPA Level III, inside the wider Mediterranean California. That is read at Squirrel Mountain Valley's own centroid, and it is not what its county reads: Kern County is mostly Central California Valley. The wider page above you is answering a different question about different ground.
What Grows in Squirrel Mountain Valley
Every plant below cleared Squirrel Mountain Valley's own zone 9a and its 284-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Squirrel Mountain Valley?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Jan 24; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 21 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 2 — long-season crops need about 90 days of runway, quick greens only 30. And with a calendar this mild, the honest answer is that planting barely stops — winter opens seasons colder regions never see.
What's on the federal record near Squirrel Mountain Valley
Closest first, within ~10 miles of Squirrel Mountain Valley. Listing isn't leaking, and distance isn't exposure.
- Silverado ProspectMining · 0.8 mi
- Black JackMining · 1.1 mi
- Copper KingMining · 1.2 mi
- KERN VALLEY HOSPITALUnderground Storage Tanks · 1.2 mi
- KERN VALLEY HOSPITAL DISTRICTBrownfields · 1.2 mi
- DAM KORNER NO 4Brownfields · 1.4 mi
- MESA CLINICAL PHARMACYBrownfields · 1.4 mi
- MT MESA AUTOMOTIVEBrownfields · 1.4 mi
- MT MESA SHELLBrownfields · 1.5 mi
- MT MESA SHELLUnderground Storage Tanks · 1.5 mi
- 026S033E26H001MNitrate · 1.7 mi
- DOLLAR GENERAL #15451Brownfields · 1.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Squirrel Mountain Valley'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 Squirrel Mountain Valley.
Total Sites
136
within ~10 miles of Squirrel Mountain Valley
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Squirrel Mountain Valley
Severity Distribution
within ~10 miles of Squirrel Mountain Valley
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Squirrel Mountain Valley, two things run higher than the national average within ~10 miles of Squirrel Mountain Valley — Mining (32 sites) and Brownfields (77 sites). 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.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Squirrel Mountain Valley
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 Squirrel Mountain Valley average
Your land is one point inside Squirrel Mountain Valley
Everything above resolves to Squirrel Mountain Valley as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Squirrel Mountain Valley Average
Squirrel Mountain Valley Average
- ●USDA Zones 9a, averaged across Squirrel Mountain Valley
- ●One soil character for all of Squirrel Mountain Valley
- ●Frost dates read at Squirrel Mountain Valley's scale: Feb 21 to Dec 2
YOUR Parcel
- ✓Your exact zone, not Squirrel Mountain Valley's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Squirrel Mountain Valley
Pull a site-specific report for your exact address in Squirrel Mountain Valley, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Squirrel Mountain Valley averages can't show:
We read public map data around Squirrel Mountain Valley — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Squirrel Mountain Valley average
How we know this about Squirrel Mountain Valley
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 Squirrel Mountain Valley’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 Squirrel Mountain Valley
When does frost risk typically end in Squirrel Mountain Valley?
The last hard freeze (28°F) in Squirrel Mountain Valley typically lands around Feb 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 Mar 14.
When is the first frost in Squirrel Mountain Valley?
The first hard freeze (28°F) in Squirrel Mountain Valley typically arrives around Dec 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 18, so the watching starts about Nov 2 — about 284 days after the spring freeze cleared.
How long is the growing season in Squirrel Mountain Valley?
Measured between 28°F hard freezes, Squirrel Mountain Valley sees about 284 frost-free days — roughly Feb 21 through Dec 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 14 to Nov 18, about 249 days.
Is the soil safe to grow vegetables in Squirrel Mountain Valley?
The federal record around Squirrel Mountain Valley is a meaningful one — 136 documented sites, mostly Brownfields entries (77), the nearest Mining record about 0.8 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 Squirrel Mountain Valley?
From about Nov 2 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 2 (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 2. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Squirrel Mountain Valley's scale — its 9a band and its 284-day season. Your yard writes its own version of Squirrel Mountain Valley'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 Squirrel Mountain Valley’s own scale
6 of the readings below were taken at Squirrel Mountain Valley's own scale — its own ~284-day season between 28°F freezes, the 1,153 acres it covers and 136 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Squirrel Mountain Valley's own USDA hardiness band, zones 9aUSDA PHZM 2023
- Squirrel Mountain Valley's own 28°F hard-freeze dates, about Feb 21 and Dec 2 and the ~284-day span between themNOAA 1991–2020 Climate Normals
- 136 documented contamination sites on the federal record near Squirrel Mountain Valley, the closest Mining record about 0.8 miles out from the town centreFederal environmental registers
- Squirrel Mountain Valley's boundary and the 1,153 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~284-day seasonGrowable Ground crop-matching engine
- Squirrel Mountain Valley sits in the Central California Foothills and Coastal 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 Squirrel Mountain Valley's 1,153 acres read through its county's SSURGO summaryfrom Kern County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kern 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 Kern County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Squirrel Mountain Valley's 1,153 acreswhy one lot differs from the next →
- Which side of Squirrel Mountain Valley you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,153 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Mining record about 0.8 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 Squirrel Mountain Valley-wide figureread your own land →