Spring Valley Lake, California, sits in USDA hardiness zone 8b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
These conditions suit tomato, fig, california poppy, and grape — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Spring Valley Lake, 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 Spring Valley Lake 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 Spring Valley Lake — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Spring Valley Lake — the short answer
Spring Valley Lake, California: USDA zone 8b, about 328 days between hard freezes, across 2K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jan 18
- San Bernardino County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 12
- San Bernardino County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~328
- San Bernardino County normal — NOAA 1991–2020, nearest to this town
- Town area
- 2K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are San Bernardino County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Spring Valley Lake's average, not your lot's — a low corner or a tree line moves it. Against Spring Valley Lake's 328-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Spring Valley Lake
Each reading below is measured for Spring Valley Lake itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsSpring Valley Lake runs about 328 days between hard freezes (read from San Bernardino County, the closest normal to Spring Valley Lake) — 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
MeasuredSpring Valley Lake 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 Spring Valley Lake is in
Spring Valley Lake sits in the Mojave Basin and Range — EPA Level III, inside the wider North American Deserts. That is read at Spring Valley Lake's own centroid rather than borrowed from San Bernardino County.
What Grows in Spring Valley Lake
Plants matched to Spring Valley Lake's USDA zones 8b, ordered by how much hardiness margin each has here — the ones with room to spare at both ends of this town's band lead. Each links to its full growing profile.
Is it too late to plant in Spring Valley Lake?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Jan 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 12 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.
What's on the federal record near Spring Valley Lake
Closest first, within ~10 miles of Spring Valley Lake. Listing isn't leaking, and distance isn't exposure.
- SPRING VALLEY LAKE ASSOC.Brownfields · 1400 ft
- SPRING VALLEY LAKE COUNTRY CLUBBrownfields · 1700 ft
- MARINA GROCERYUnderground Storage Tanks · 1900 ft
- MARINA GROCERY & LIQUORBrownfields · 1900 ft
- CERCHIO ENTERPRISES INC DBA DC LOGISTICSBrownfields · 2000 ft
- 005N004W23R004SNitrate · 2600 ft
- 005N004W23R003SNitrate · 2600 ft
- 005N004W23R005SNitrate · 2600 ft
- 005N004W23R007SNitrate · 0.5 mi
- 005N004W25N001SNitrate · 0.7 mi
- 005N004W35A004SNitrate · 0.9 mi
- COMPLETE TRUCKINGBrownfields · 1.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Spring Valley Lake'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 Spring Valley Lake.
Total Sites
1,556
within ~10 miles of Spring Valley Lake
Risk Level
Elevated
Highest-severity
8 Superfund sites
Sources Checked
within ~10 miles of Spring Valley Lake
Severity Distribution
within ~10 miles of Spring Valley Lake
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Spring Valley Lake, two things run higher than the national average within ~10 miles of Spring Valley Lake — Brownfields (973 sites) and Nitrate (432 sites). 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.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Spring Valley Lake
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 Spring Valley Lake average
Your land is one point inside Spring Valley Lake
Everything above resolves to Spring Valley Lake as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from San Bernardino County’s record because no 30-year normal resolves at this town’s own centroid. 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 Spring Valley Lake Average
Spring Valley Lake Average
- ●USDA Zones 8b, averaged across Spring Valley Lake
- ●One soil character for all of Spring Valley Lake
- ●Frost dates read at Spring Valley Lake's scale: Jan 18 to Dec 12
YOUR Parcel
- ✓Your exact zone, not Spring Valley Lake's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Spring Valley Lake
Pull a site-specific report for your exact address in Spring Valley Lake, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Spring Valley Lake averages can't show:
We read public map data around Spring Valley Lake — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Spring Valley Lake average
How we know this about Spring Valley Lake
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 San Bernardino County’s record, because none resolves here; 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 Spring Valley Lake
When does frost risk typically end in Spring Valley Lake?
The last hard freeze (28°F) in Spring Valley Lake typically lands around Jan 18, 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 Feb 8.
When is the first frost in Spring Valley Lake?
The first hard freeze (28°F) in Spring Valley Lake typically arrives around Dec 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 28, so the watching starts about Nov 12 — about 328 days after the spring freeze cleared.
How long is the growing season in Spring Valley Lake?
Measured between 28°F hard freezes, Spring Valley Lake sees about 328 frost-free days — roughly Jan 18 through Dec 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 8 to Nov 28, about 293 days.
Is the soil safe to grow vegetables in Spring Valley Lake?
The federal record around Spring Valley Lake is a meaningful one — 1,556 documented sites, mostly Brownfields entries (973), the nearest Brownfields record about 0.3 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 Spring Valley Lake?
From about Nov 12 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 12 (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 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Spring Valley Lake's scale — its 8b band and its 328-day season. Your yard writes its own version of Spring Valley Lake'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 Spring Valley Lake’s own scale
4 of the readings below were taken at Spring Valley Lake's own scale — the 1,935 acres it covers and 1,556 documented sites around it; 6 are borrowed from a wider read, named and linked below.
Measured here
- Spring Valley Lake's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 1,556 documented contamination sites on the federal record near Spring Valley Lake, the closest Brownfields record about 0.3 miles out from the town centreFederal environmental registers
- Spring Valley Lake's boundary and the 1,935 acres inside itUS Census TIGER/Line 2025
- The ecoregion at Spring Valley Lake's own centroid, the Mojave Basin and RangeUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Spring Valley Lake has no normal of its own, so its county's is the closest measured readfrom San Bernardino County
- Soil character — no town-scale survey exists, so Spring Valley Lake's 1,935 acres read through its county's SSURGO summaryfrom San Bernardino County
- The candidate plant list — California's curated set, filtered to this zone band and re-ordered by how much margin each has herefrom California
- 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 Spring Valley Lake's 1,935 acreswhy one lot differs from the next →
- Which side of Spring Valley Lake you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,935 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.3 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 Spring Valley Lake-wide figureread your own land →