Alto, Texas, sits in USDA hardiness zone 8b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Well-matched crops include cabbage, fig, california poppy, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Alto, 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 Alto 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 Alto — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Alto — the short answer
Alto, Texas: USDA zone 8b, about 291 days between hard freezes, across 1K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 14
- Cherokee County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 2
- Cherokee County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~291
- Cherokee County normal — NOAA 1991–2020, nearest to this town
- Town area
- 1K 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 Cherokee County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Alto's average, not your lot's — a low corner or a tree line moves it. Against Alto's 291-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Alto
Each reading below is measured for Alto itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsAlto runs about 291 days between hard freezes (read from Cherokee County, the closest normal to Alto) — 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
MeasuredAlto 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 Alto is in
Alto sits in the South Central Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Alto's own centroid rather than borrowed from Cherokee County.
What Grows in Alto
Every plant below cleared Alto's own zone 8b and its 291-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Alto?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Jan 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 14 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 2 — long-season crops need about 90 days of runway, quick greens only 30. In a climate this gentle, “too late” hardly applies — the question becomes which crops prefer the cooler months ahead.
What's on the federal record near Alto
Closest first, within ~10 miles of Alto. Listing isn't leaking, and distance isn't exposure.
- ALTO ISDUnderground Storage Tanks · 200 ft
- STOP & SHOP 4Underground Storage Tanks · 600 ft
- PIC N GOUnderground Storage Tanks · 600 ft
- LUCKY STOP 3Underground Storage Tanks · 650 ft
- ROCKAS SUPER MARKETUnderground Storage Tanks · 850 ft
- PEARMAN MOTORUnderground Storage Tanks · 850 ft
- BROOKSHIRE BROTHERS 7Underground Storage Tanks · 1200 ft
- ALVIN OLSENUnderground Storage Tanks · 1800 ft
- FAMILY DOLLAR #8312Brownfields · 2000 ft
- SKYVIEW UNITBrownfields · 0.5 mi
- ALTO RURAL WSC CENTRAL HIGH PLANTPFAS · 2.5 mi
- LEO HICKS CREOSOTING CO INCBrownfields · 3.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Alto'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 Alto.
Total Sites
19
within ~10 miles of Alto
Risk Level
Low
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Alto
Severity Distribution
within ~10 miles of Alto
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •PFAS do not break down in groundwater. Irrigate from a tested source.
Check your specific parcel in Alto
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 Alto average
Your land is one point inside Alto
Everything above resolves to Alto as a whole — one PHZM band, read across 1K acres, with hard-freeze dates borrowed from Cherokee 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 Alto Average
Alto Average
- ●USDA Zones 8b, averaged across Alto
- ●One soil character for all of Alto
- ●Frost dates read at Alto's scale: Feb 14 to Dec 2
YOUR Parcel
- ✓Your exact zone, not Alto's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Alto
Pull a site-specific report for your exact address in Alto, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Alto averages can't show:
We read public map data around Alto — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Alto average
How we know this about Alto
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 Cherokee 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 Alto
When does frost risk typically end in Alto?
The last hard freeze (28°F) in Alto typically lands around Feb 14, 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 7.
When is the first frost in Alto?
The first hard freeze (28°F) in Alto typically arrives around Dec 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 18, so the watching starts about Nov 2 — about 291 days after the spring freeze cleared.
How long is the growing season in Alto?
Measured between 28°F hard freezes, Alto sees about 291 frost-free days — roughly Feb 14 through Dec 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 7 to Nov 18, about 256 days.
Is the soil safe to grow vegetables in Alto?
The federal record around Alto is light — 19 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (9), the nearest Underground Storage Tanks record under a tenth of a mile 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 Alto?
From about Nov 2 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 2 (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 2. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Alto's scale — its 8b band and its 291-day season. Your yard writes its own version of Alto'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 Alto’s own scale
5 of the readings below were taken at Alto's own scale — the 1,091 acres it covers and 19 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Alto's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 19 documented contamination sites on the federal record near Alto, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Alto's boundary and the 1,091 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~291-day seasonGrowable Ground crop-matching engine
- The ecoregion at Alto's own centroid, the South Central PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Alto has no normal of its own, so its county's is the closest measured readfrom Cherokee County
- Soil character — no town-scale survey exists, so Alto's 1,091 acres read through its county's SSURGO summaryfrom Cherokee County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Cherokee County
- The growing challenges every Texas grower plans around — written at state scale, so they stay on the state guidefrom Texas
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Cherokee County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Alto's 1,091 acreswhy one lot differs from the next →
- Which side of Alto you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,091 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Alto-wide figureread your own land →
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