California, Maryland, sits in USDA hardiness zone 8a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Expect cabbage, fig, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in California, 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 California 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 California — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
California — the short answer
California, Maryland: USDA zone 8a, about 260 days between hard freezes, across 8K acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 16
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Dec 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~260
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 8K 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 8a is California's average, not your lot's — a low corner or a tree line moves it. Against California's 260-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in California
Each reading below is measured for California itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCalifornia runs about 260 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
MeasuredCalifornia sits in USDA hardiness zone 8a.
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 California is in
California sits in the Southeastern Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at California's own centroid rather than borrowed from St. Mary's County.
What Grows in California
Every plant below cleared California's own zone 8a and its 260-day season. Each card opens that plant's Maryland profile. How we score.
Is it too late to plant in California?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 16; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 16 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 1 — 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.
Documented around California
Spotted lanternfly documented 6 miles from California, first recorded 2019. What to watch for.
What's on the federal record near California
Closest first, within ~10 miles of California. Listing isn't leaking, and distance isn't exposure.
- ESPERANZA MIDDLE SCHOOLBrownfields · 1600 ft
- WWW.GOCTSI.COM / CTS FABRICTION FACILITYBrownfields · 2200 ft
- California Dash In #069Underground Storage Tanks · 2200 ft
- SHEETZ #292Brownfields · 2400 ft
- Sheetz #292Underground Storage Tanks · 2400 ft
- UNITED RENTALS NORTH AMERICA 471Brownfields · 2400 ft
- WALMART SUPERCENTER #1981Brownfields · 0.6 mi
- Liberty Car WashUnderground Storage Tanks · 0.6 mi
- CLASSIC COLLISION - PAX RIVER 2023Brownfields · 0.6 mi
- GREEN HOLLY ELEMENTARY SCHOOLBrownfields · 0.7 mi
- Esperanza ShellUnderground Storage Tanks · 0.7 mi
- SM Df 69Nitrate · 0.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from California'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 California.
Sources Checked
within ~10 miles of California
Severity Distribution
within ~10 miles of California
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around California, Nitrate runs higher than the national average — 176 sites within ~10 miles of California. That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in California
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 California average
Your land is one point inside California
Everything above resolves to California as a whole — one PHZM band and one 28°F frost record, read across 8K 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 California Average
California Average
- ●USDA Zones 8a, averaged across California
- ●One soil character for all of California
- ●Frost dates read at California's scale: Mar 16 to Dec 1
YOUR Parcel
- ✓Your exact zone, not California's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in California
Pull a site-specific report for your exact address in California, Maryland — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that California averages can't show:
We read public map data around California — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the California average
How we know this about California
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 California’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 California
When does frost risk typically end in California?
The last hard freeze (28°F) in California typically lands around Mar 16, 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 6.
When is the first frost in California?
The first hard freeze (28°F) in California typically arrives around Dec 1, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 17, so the watching starts about Nov 1 — about 260 days after the spring freeze cleared.
How long is the growing season in California?
Measured between 28°F hard freezes, California sees about 260 frost-free days — roughly Mar 16 through Dec 1, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 6 to Nov 17, about 225 days.
Is the soil safe to grow vegetables in California?
The federal record around California is a meaningful one — 493 documented sites, mostly Underground Storage Tanks entries (208), 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 California?
From about Nov 1 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 1 (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 1. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at California's scale — its 8a band and its 260-day season. Your yard writes its own version of California'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 California’s own scale
7 of the readings below were taken at California's own scale — its own ~260-day season between 28°F freezes, the 8,234 acres it covers and 493 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- California's own USDA hardiness band, zones 8aUSDA PHZM 2023
- California's own 28°F hard-freeze dates, about Mar 16 and Dec 1 and the ~260-day span between themNOAA 1991–2020 Climate Normals
- 493 documented contamination sites on the federal record near California, the closest Brownfields record about 0.3 miles out from the town centreFederal environmental registers
- California's boundary and the 8,234 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~260-day seasonGrowable Ground crop-matching engine
- The ecoregion at California's own centroid, the Southeastern PlainsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Californialydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so California's 8,234 acres read through its county's SSURGO summaryfrom St. Mary's County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom St. Mary's County
- The growing challenges every Maryland grower plans around — written at state scale, so they stay on the state guidefrom Maryland
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom St. Mary's County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among California's 8,234 acreswhy one lot differs from the next →
- Which side of California you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 8,234 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 California-wide figureread your own land →
More in Maryland
Growing region
Nearby growing guides