Camptonville, California, sits in USDA hardiness zone 9a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
A short list that earns its place here — artichoke, fig, california poppy, and cabbage — with any one site's soil, sun, and drainage making the final cut.
Even in Camptonville, 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 Camptonville 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 Camptonville — soil, climate, flood, and parcel records. How we handle your address.
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Camptonville — the short answer
Camptonville, California: USDA zone 9a, about 269 days between hard freezes, across 549 acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Dec 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~269
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 549 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 Camptonville's average, not your lot's — a low corner or a tree line moves it. Against Camptonville's 269-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Camptonville
Each reading below is measured for Camptonville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCamptonville runs about 269 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
MeasuredCamptonville 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 Camptonville is in
Camptonville sits in the Sierra Nevada — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Camptonville's own centroid, and it is not what its county reads: Yuba County is mostly Central California Valley. The wider page above you is answering a different question about different ground.
What Grows in Camptonville
Every plant below cleared Camptonville's own zone 9a and its 269-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Camptonville?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Feb 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 11 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 5 — long-season crops need about 90 days of runway, quick greens only 30. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
What's on the federal record near Camptonville
Closest first, within ~10 miles of Camptonville. Listing isn't leaking, and distance isn't exposure.
- PACIFIC BELLBrownfields · 200 ft
- Fern LeafMining · 1000 ft
- 018N008E02K001MNitrate · 1200 ft
- Ironrite ClaimMining · 1.1 mi
- USDA USFS R05 T SERVICE YUBA RANGER STATIONBrownfields · 1.4 mi
- DON DEANEBrownfields · 2.4 mi
- RoupeMining · 3.2 mi
- AlaskaMining · 3.2 mi
- 019N008E32B001MNitrate · 3.4 mi
- D.E. Luce & CoMining · 3.4 mi
- Roupe PropertyMining · 3.6 mi
- PeacockMining · 3.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Camptonville'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 Camptonville.
Sources Checked
within ~10 miles of Camptonville
Severity Distribution
within ~10 miles of Camptonville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Camptonville, Mining runs higher than the national average — 61 sites within ~10 miles of Camptonville. That's not a problem with your land — it's information about 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.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Camptonville
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 Camptonville average
Your land is one point inside Camptonville
Everything above resolves to Camptonville as a whole — one PHZM band and one 28°F frost record, read across 549 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 Camptonville Average
Camptonville Average
- ●USDA Zones 9a, averaged across Camptonville
- ●One soil character for all of Camptonville
- ●Frost dates read at Camptonville's scale: Mar 11 to Dec 5
YOUR Parcel
- ✓Your exact zone, not Camptonville's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Camptonville
Pull a site-specific report for your exact address in Camptonville, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Camptonville averages can't show:
We read public map data around Camptonville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Camptonville average
How we know this about Camptonville
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 Camptonville’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 Camptonville
When does frost risk typically end in Camptonville?
The last hard freeze (28°F) in Camptonville typically lands around Mar 11, 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 1.
When is the first frost in Camptonville?
The first hard freeze (28°F) in Camptonville typically arrives around Dec 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 21, so the watching starts about Nov 5 — about 269 days after the spring freeze cleared.
How long is the growing season in Camptonville?
Measured between 28°F hard freezes, Camptonville sees about 269 frost-free days — roughly Mar 11 through Dec 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 1 to Nov 21, about 234 days.
Is the soil safe to grow vegetables in Camptonville?
The federal record around Camptonville is a meaningful one — 114 documented sites, mostly Mining entries (61), the nearest Brownfields record under a tenth of a mile 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 Camptonville?
From about Nov 5 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Camptonville's scale — its 9a band and its 269-day season. Your yard writes its own version of Camptonville'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 Camptonville’s own scale
6 of the readings below were taken at Camptonville's own scale — its own ~269-day season between 28°F freezes, the 549 acres it covers and 114 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Camptonville's own USDA hardiness band, zones 9aUSDA PHZM 2023
- Camptonville's own 28°F hard-freeze dates, about Mar 11 and Dec 5 and the ~269-day span between themNOAA 1991–2020 Climate Normals
- 114 documented contamination sites on the federal record near Camptonville, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Camptonville's boundary and the 549 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~269-day seasonGrowable Ground crop-matching engine
- Camptonville sits in the Sierra Nevada — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Camptonville's 549 acres read through its county's SSURGO summaryfrom Yuba County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Yuba 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 Yuba County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Camptonville's 549 acreswhy one lot differs from the next →
- Which side of Camptonville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 549 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record under a tenth of a mile 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 Camptonville-wide figureread your own land →
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