Roseville, California, sits in USDA hardiness zone 9b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Among the crops suited to this profile: okra, meyer lemon, california poppy, and artichoke. The site-level story — soil, sun, drainage — decides the rest.
Even in Roseville, 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 Roseville 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 Roseville — soil, climate, flood, and parcel records. How we handle your address.
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Roseville — the short answer
Roseville, California: USDA zone 9b, about 290 days between hard freezes, across 28K acres of city.
- USDA zone
- 9b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 23
- Placer County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 10
- Placer County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~290
- Placer County normal — NOAA 1991–2020, nearest to this town
- City area
- 28K 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 Placer County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Roseville's average, not your lot's — a low corner or a tree line moves it. Against Roseville's 290-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Roseville
Each reading below is measured for Roseville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsRoseville runs about 290 days between hard freezes (read from Placer County, the closest normal to Roseville) — 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
MeasuredRoseville sits in USDA hardiness zone 9b.
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 Roseville is in
Roseville sits in the Central California Valley — EPA Level III, inside the wider Mediterranean California. That is read at Roseville's own centroid, and it is not what its county reads: Placer County is mostly Sierra Nevada. The wider page above you is answering a different question about different ground.
What Grows in Roseville
Every plant below cleared Roseville's own zone 9b and its 290-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Roseville?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Jan 26; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 23 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 10 — 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 Roseville
Closest first, within ~10 miles of Roseville. Listing isn't leaking, and distance isn't exposure.
- ECOLAB, INC.Brownfields · 1400 ft
- ADVANCED DENTAL CONCEPTBrownfields · 1500 ft
- Woodcreek Oaks PetroleumUnderground Storage Tanks · 1900 ft
- ARCO AM/PM - WOODCREEK OAKSBrownfields · 1900 ft
- CITY OF ROSEVILLEBrownfields · 2100 ft
- HAYFIN PARTNERS SPV I LPBrownfields · 2100 ft
- PAVILIONS DENTAL GROUPBrownfields · 2300 ft
- STAR CLEANERS LLCBrownfields · 2500 ft
- ROBERT BOSCH SEMICONDUCTOR LLCBrownfields · 2600 ft
- ROBERT BOSCH SEMICONDUCTOR LLCToxics Release Inventory · 2600 ft
- RALEY'S #228Brownfields · 0.6 mi
- DOLLAR TREE #03223Brownfields · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Roseville'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 Roseville.
Sources Checked
within ~10 miles of Roseville
Severity Distribution
within ~10 miles of Roseville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Roseville, Brownfields runs higher than the national average — 2,199 sites within ~10 miles of Roseville. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Roseville
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 Roseville average
Your land is one point inside Roseville
Everything above resolves to Roseville as a whole — one PHZM band, read across 28K acres, with hard-freeze dates borrowed from Placer County’s record because no 30-year normal resolves at this city’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 city 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 Roseville Average
Roseville Average
- ●USDA Zones 9b, averaged across Roseville
- ●One soil character for all of Roseville
- ●Frost dates read at Roseville's scale: Feb 23 to Dec 10
YOUR Parcel
- ✓Your exact zone, not Roseville's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Roseville
Pull a site-specific report for your exact address in Roseville, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Roseville averages can't show:
We read public map data around Roseville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Roseville average
How we know this about Roseville
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Placer 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 city grain anywhere on this page — there is no city-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 Roseville
When does frost risk typically end in Roseville?
The last hard freeze (28°F) in Roseville typically lands around Feb 23, 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 16.
When is the first frost in Roseville?
The first hard freeze (28°F) in Roseville typically arrives around Dec 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 26, so the watching starts about Nov 10 — about 290 days after the spring freeze cleared.
How long is the growing season in Roseville?
Measured between 28°F hard freezes, Roseville sees about 290 frost-free days — roughly Feb 23 through Dec 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 16 to Nov 26, about 255 days.
Is the soil safe to grow vegetables in Roseville?
The federal record around Roseville is a meaningful one — 2,563 documented sites, mostly Brownfields entries (2,199), 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 Roseville?
From about Nov 10 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 10 (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 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Roseville's scale — its 9b band and its 290-day season. Your yard writes its own version of Roseville'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 Roseville’s own scale
5 of the readings below were taken at Roseville's own scale — the 28,216 acres it covers and 2,563 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Roseville's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 2,563 documented contamination sites on the federal record near Roseville, the closest Brownfields record about 0.3 miles out from the town centreFederal environmental registers
- Roseville's boundary and the 28,216 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9b and a ~290-day seasonGrowable Ground crop-matching engine
- Roseville sits in the Central California Valley — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Roseville has no normal of its own, so its county's is the closest measured readfrom Placer County
- Soil character — no town-scale survey exists, so Roseville's 28,216 acres read through its county's SSURGO summaryfrom Placer County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Placer 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 Placer County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Roseville's 28,216 acreswhy one lot differs from the next →
- Which side of Roseville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 28,216 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 Roseville-wide figureread your own land →
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