Mayfair, California, sits in USDA hardiness zone 9b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
These conditions suit okra, meyer lemon, california poppy, and artichoke — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Mayfair, 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 Mayfair 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 Mayfair — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Mayfair — the short answer
Mayfair, California: USDA zone 9b, about 329 days between hard freezes, across 332 acres of town.
- USDA zone
- 9b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jan 16
- Fresno County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 11
- Fresno County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~329
- Fresno County normal — NOAA 1991–2020, nearest to this town
- Town area
- 332 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 Fresno County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Mayfair's average, not your lot's — a low corner or a tree line moves it. Against Mayfair's 329-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Mayfair
Each reading below is measured for Mayfair itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsMayfair runs about 329 days between hard freezes (read from Fresno County, the closest normal to Mayfair) — 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
MeasuredMayfair 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 Mayfair is in
Mayfair sits in the Central California Valley — EPA Level III, inside the wider Mediterranean California. That is read at Mayfair's own centroid rather than borrowed from Fresno County.
What Grows in Mayfair
Every plant below cleared Mayfair's own zone 9b and its 329-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Mayfair?
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 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 16 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 11 — 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 Mayfair
Closest first, within ~10 miles of Mayfair. Listing isn't leaking, and distance isn't exposure.
- HOT TANKS BY BILL HASKETTBrownfields · 1100 ft
- WISHON ELEMENTARYBrownfields · 1800 ft
- 1 STOP SHOP*Underground Storage Tanks · 2400 ft
- AUTOZONE #5319Brownfields · 2500 ft
- CLINTON AVE. APARTMENTS MERCURY RESPONSESuperfund · 2600 ft
- CEDAR VETERINARY HOSPITALBrownfields · 2600 ft
- FRESNO USD MAYFAIR ELEMBrownfields · 0.6 mi
- NHOBrownfields · 0.6 mi
- ALBERTO ENRIQUEZBrownfields · 0.6 mi
- ESTEVAN TAFOYA RESCALVO DBA TAFOYA TRANSPORTBrownfields · 0.6 mi
- YOSEMITE MIDDLE SCHOOLBrownfields · 0.6 mi
- NAZARETH HOUSE OF FRESNO INCBrownfields · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Mayfair'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 Mayfair.
Sources Checked
within ~10 miles of Mayfair
Severity Distribution
within ~10 miles of Mayfair
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Mayfair, Brownfields runs higher than the national average — 2,925 sites within ~10 miles of Mayfair. 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.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Mayfair
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 Mayfair average
Your land is one point inside Mayfair
Everything above resolves to Mayfair as a whole — one PHZM band, read across 332 acres, with hard-freeze dates borrowed from Fresno 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 Mayfair Average
Mayfair Average
- ●USDA Zones 9b, averaged across Mayfair
- ●One soil character for all of Mayfair
- ●Frost dates read at Mayfair's scale: Jan 16 to Dec 11
YOUR Parcel
- ✓Your exact zone, not Mayfair's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Mayfair
Pull a site-specific report for your exact address in Mayfair, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Mayfair averages can't show:
We read public map data around Mayfair — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Mayfair average
How we know this about Mayfair
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 Fresno 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 Mayfair
When does frost risk typically end in Mayfair?
The last hard freeze (28°F) in Mayfair typically lands around Jan 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 Feb 6.
When is the first frost in Mayfair?
The first hard freeze (28°F) in Mayfair typically arrives around Dec 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 27, so the watching starts about Nov 11 — about 329 days after the spring freeze cleared.
How long is the growing season in Mayfair?
Measured between 28°F hard freezes, Mayfair sees about 329 frost-free days — roughly Jan 16 through Dec 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 6 to Nov 27, about 294 days.
Is the soil safe to grow vegetables in Mayfair?
The federal record around Mayfair runs heavier than most — 3,450 documented sites, mostly Brownfields entries (2,925), the nearest Brownfields record about 0.2 miles out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Mayfair?
From about Nov 11 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 11 (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 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Mayfair's scale — its 9b band and its 329-day season. Your yard writes its own version of Mayfair'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 Mayfair’s own scale
5 of the readings below were taken at Mayfair's own scale — the 332 acres it covers and 3,450 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Mayfair's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 3,450 documented contamination sites on the federal record near Mayfair, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Mayfair's boundary and the 332 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9b and a ~329-day seasonGrowable Ground crop-matching engine
- The ecoregion at Mayfair's own centroid, the Central California ValleyUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Mayfair has no normal of its own, so its county's is the closest measured readfrom Fresno County
- Soil character — no town-scale survey exists, so Mayfair's 332 acres read through its county's SSURGO summaryfrom Fresno County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Fresno 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 Fresno County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Mayfair's 332 acreswhy one lot differs from the next →
- Which side of Mayfair you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 332 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 Mayfair-wide figureread your own land →