Asherton, Texas, sits in USDA hardiness zone 9a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Reliable performers under these conditions include artichoke, fig, california poppy, and cabbage; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Asherton, 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 Asherton 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 Asherton — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Asherton — the short answer
Asherton, Texas: USDA zone 9a, about 310 days between hard freezes, across 523 acres of city.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 2
- Dimmit County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 9
- Dimmit County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~310
- Dimmit County normal — NOAA 1991–2020, nearest to this town
- City area
- 523 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 Dimmit County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is Asherton's average, not your lot's — a low corner or a tree line moves it. Against Asherton's 310-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Asherton
Each reading below is measured for Asherton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsAsherton runs about 310 days between hard freezes (read from Dimmit County, the closest normal to Asherton) — 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
MeasuredAsherton sits in USDA hardiness zone 9a.
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 Asherton is in
Asherton sits in the Southern Texas Plains — EPA Level III, inside the wider Great Plains. That is read at Asherton's own centroid rather than borrowed from Dimmit County.
What Grows in Asherton
Every plant below cleared Asherton's own zone 9a and its 310-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Asherton?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Jan 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 9 — 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 Asherton
Closest first, within ~10 miles of Asherton. Listing isn't leaking, and distance isn't exposure.
- DILLARDS PHILLIPPS 66Underground Storage Tanks · 1100 ft
- KWIK CHEK 82Underground Storage Tanks · 1500 ft
- FTS INTERNATIONAL SERVICES, LLC - ASHERTONBrownfields · 0.6 mi
- ATLAS OIL COMPANY - ASHERTONToxics Release Inventory · 1.0 mi
- ALFREDO CASTANEDAUnderground Storage Tanks · 1.3 mi
- CARRIZO SPRINGS SCHOOLUnderground Storage Tanks · 1.6 mi
- VEGAS DRIVE-INUnderground Storage Tanks · 1.6 mi
- TED BANDA SERVICE STATIONUnderground Storage Tanks · 1.6 mi
- ESCOBEDO CONOCOUnderground Storage Tanks · 1.6 mi
- BOWMAN CATTLEUnderground Storage Tanks · 1.6 mi
- RIO GRANDE ELECTRICUnderground Storage Tanks · 1.6 mi
- CATARINA HOTELUnderground Storage Tanks · 1.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Asherton'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 Asherton.
Total Sites
68
within ~10 miles of Asherton
Risk Level
Moderate
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Asherton
Severity Distribution
within ~10 miles of Asherton
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Asherton, Underground Storage Tanks runs higher than the national average — 47 sites within ~10 miles of Asherton. That's not a problem with your land — it's information about it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Asherton
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 Asherton average
Your land is one point inside Asherton
Everything above resolves to Asherton as a whole — one PHZM band, read across 523 acres, with hard-freeze dates borrowed from Dimmit 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 Asherton Average
Asherton Average
- ●USDA Zones 9a, averaged across Asherton
- ●One soil character for all of Asherton
- ●Frost dates read at Asherton's scale: Feb 2 to Dec 9
YOUR Parcel
- ✓Your exact zone, not Asherton's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Asherton
Pull a site-specific report for your exact address in Asherton, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Asherton averages can't show:
We read public map data around Asherton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Asherton average
How we know this about Asherton
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 Dimmit 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 Asherton
When does frost risk typically end in Asherton?
The last hard freeze (28°F) in Asherton typically lands around Feb 2, 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 23.
When is the first frost in Asherton?
The first hard freeze (28°F) in Asherton typically arrives around Dec 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 25, so the watching starts about Nov 9 — about 310 days after the spring freeze cleared.
How long is the growing season in Asherton?
Measured between 28°F hard freezes, Asherton sees about 310 frost-free days — roughly Feb 2 through Dec 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 23 to Nov 25, about 275 days.
Is the soil safe to grow vegetables in Asherton?
The federal record around Asherton shows 68 documented sites, mostly Underground Storage Tanks entries (47), the nearest Underground Storage Tanks record about 0.2 miles out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Asherton?
From about Nov 9 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 9 (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 9. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Asherton's scale — its 9a band and its 310-day season. Your yard writes its own version of Asherton'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 Asherton’s own scale
5 of the readings below were taken at Asherton's own scale — the 523 acres it covers and 68 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Asherton's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 68 documented contamination sites on the federal record near Asherton, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Asherton's boundary and the 523 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~310-day seasonGrowable Ground crop-matching engine
- The ecoregion at Asherton's own centroid, the Southern Texas PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Asherton has no normal of its own, so its county's is the closest measured readfrom Dimmit County
- Soil character — no town-scale survey exists, so Asherton's 523 acres read through its county's SSURGO summaryfrom Dimmit County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Dimmit 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 Dimmit County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Asherton's 523 acreswhy one lot differs from the next →
- Which side of Asherton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 523 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Asherton-wide figureread your own land →