Glennville, California, sits in USDA hardiness zone 8b — a zone band wide enough that plant choice, not possibility, is the interesting question.
A short list that earns its place here — cabbage, fig, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Glennville, 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 Glennville 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 Glennville — soil, climate, flood, and parcel records. How we handle your address.
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Glennville — the short answer
Glennville, California: USDA zone 8b, about 218 days between hard freezes, across 1K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 8
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~218
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K 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 8b is Glennville's average, not your lot's — a low corner or a tree line moves it. Against Glennville's 218-day season, see what your own ground reads.
Your town runs its own season
Glennville's own 30-year record measures about 218 days between 28°F killing freezes — 101 days shorter than Kern County's ~319. Both are measured records, not estimates.
That gap is the whole reason a county average can mislead here. Plant against Glennville's ~218-day season rather than the county figure — and the sun, slope and cold-air drainage on your specific lot move it again.
NOAA Regional Climate Centers ACIS (1991–2020), 30-year daily minimum record. Both figures are measured records — this town’s own and its county’s. A town with no record of its own is absent here rather than estimated.
Soil varies lot by lot — soil types explained.
What this means for growing in Glennville
Each reading below is measured for Glennville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGlennville runs about 218 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredGlennville 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 Glennville is in
Glennville sits in the Central California Foothills and Coastal Mountains — EPA Level III, inside the wider Mediterranean California. That is read at Glennville's own centroid, and it is not what its county reads: Kern County is mostly Central California Valley. The wider page above you is answering a different question about different ground.
What Grows in Glennville
Every plant below cleared Glennville's own zone 8b and its 218-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Glennville?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 8 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 12 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
What's on the federal record near Glennville
Closest first, within ~10 miles of Glennville. Listing isn't leaking, and distance isn't exposure.
- CALTRANS D6 MAINTENANCE GLENNVILLE MSBrownfields · 0.8 mi
- 025S031E30H001MNitrate · 2.0 mi
- GLENNVILLE TRANSFER STATIONBrownfields · 2.8 mi
- GreenbackMining · 6.9 mi
- Greenback Copper MineMining · 6.9 mi
- Major MineMining · 7.7 mi
- Spa and BonanzaMining · 7.7 mi
- Sunrise ProspectMining · 7.7 mi
- Lucky Hit DepositMining · 7.8 mi
- Iron Mountain DepositMining · 7.9 mi
- Iron Mountain WonderMining · 8.0 mi
- Spa and BananzaMining · 8.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Glennville'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 Glennville.
Severity Distribution
within ~10 miles of Glennville
Highest-Severity Sites
Know Before You Grow
- •Mine waste leaches heavy metals. Test for lead, arsenic and cadmium before growing food here.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Glennville
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 Glennville average
Your land is one point inside Glennville
Everything above resolves to Glennville as a whole — and this is a town whose own 30-year record already runs a season its county’s does not. Your parcel sits at one point inside even that. 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 Glennville Average
Glennville Average
- ●USDA Zones 8b, averaged across Glennville
- ●One soil character for all of Glennville
- ●Frost dates read at Glennville's scale: Apr 8 to Nov 12
YOUR Parcel
- ✓Your exact zone, not Glennville's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Glennville
Pull a site-specific report for your exact address in Glennville, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Glennville averages can't show:
We read public map data around Glennville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Glennville average
How we know this about Glennville
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 Glennville’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 Glennville
When does frost risk typically end in Glennville?
The last hard freeze (28°F) in Glennville typically lands around Apr 8, 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 29.
When is the first frost in Glennville?
The first hard freeze (28°F) in Glennville typically arrives around Nov 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 29, so the watching starts about Oct 13 — about 218 days after the spring freeze cleared.
How long is the growing season in Glennville?
Measured between 28°F hard freezes, Glennville sees about 218 frost-free days — roughly Apr 8 through Nov 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 29 to Oct 29, about 183 days.
Is the soil safe to grow vegetables in Glennville?
The federal record around Glennville is light — 21 documented sites across the 9 federal source types we checked, mostly Mining entries (15), the nearest Brownfields record about 0.8 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in Glennville?
From about Oct 13 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 Nov 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 Nov 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Glennville's scale — its 8b band and its 218-day season. Your yard writes its own version of Glennville'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 Glennville’s own scale
6 of the readings below were taken at Glennville's own scale — its own ~218-day season between 28°F freezes, the 1,208 acres it covers and 21 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Glennville's own USDA hardiness band, zones 8bUSDA PHZM 2023
- Glennville's own 28°F hard-freeze dates, about Apr 8 and Nov 12 and the ~218-day span between themNOAA 1991–2020 Climate Normals
- 21 documented contamination sites on the federal record near Glennville, the closest Brownfields record about 0.8 miles out from the town centreFederal environmental registers
- Glennville's boundary and the 1,208 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~218-day seasonGrowable Ground crop-matching engine
- Glennville sits in the Central California Foothills and Coastal Mountains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Glennville's 1,208 acres read through its county's SSURGO summaryfrom Kern County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kern 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 Kern County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Glennville's 1,208 acreswhy one lot differs from the next →
- Which side of Glennville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,208 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.8 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 Glennville-wide figureread your own land →