Mitchell County, in Texas, sits in USDA hardiness zone 8a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
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.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Mitchell County holds more than one microclimate.
Soils and elevations shift across Mitchell County, so your frost dates and drainage aren't the county average. 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 Mitchell County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Mitchell County — the short answer
Mitchell County, Texas: USDA zone 8a, about 251 days between hard freezes, across 583K acres.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 12
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 18
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~251
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 583K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 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 Mitchell County's average, not your lot's — a low corner or a tree line moves it. Against Mitchell County's 251-day season, see what your own ground reads.
Heat and winter chill in Mitchell County
Across a year, Mitchell County accumulates about 5,682 growing degree days above 50°F, about 142 fewer than the middle Texas county — ahead of 103 of Texas’s 254 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Winter banks about 1,412 hours below 45°F, 317 more than the Texas middle of 1,095. Chill is what tells a fruit tree its dormancy is over, and it is set by climate rather than by anything you can build.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Mitchell County
Across Mitchell County, the ground is predominantly Mollisols, where Miles, Angelo, and Vernon are the most extensive named soil series. The soil is generally well drained with a fine sandy loam surface. Topsoil pH runs about 7.2–8.2, slightly alkaline. Rainfall drains through hydrologic group D soils.
Soil order
Mollisols
Drainage
Well drained
Prime farmland
23%
Hydric soils
0%
Soil still varies lot by lot — soil types explained.
How the ground varies across Mitchell County
The USDA soil survey maps 97% of Mitchell County as well drained — but another 2% drains differently: 2% excessively drained.
Miles is the most extensive named soil at 20% of mapped acres, then Angelo (10%) and Vernon (7%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Mitchell County
Each reading below is measured for Mitchell County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Mitchell County are well drained, in hydrologic group D — ground that drains quickly.
The upside is soil you can work early in spring and roots that never drown; the cost is that fast-draining ground dries out fast and leaches nutrients away before plants can use them.
Work in compost and mulch to hold moisture and feed, and water more often in short doses than deep and rarely.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Mitchell County runs about pH 7.2–8.2, on the alkaline side.
Many vegetables cope, but acid-lovers like blueberries struggle, and iron and manganese lock up above about pH 7.5 — leaves yellow between the veins even in rich soil.
Elemental sulfur and generous organic matter lower pH slowly for the beds that need it; test first so you add only what the soil actually calls for.
USDA NRCS SSURGO
Season length
MeasuredMitchell County runs about 251 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
MeasuredMitchell County 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 Mitchell County is in
Mitchell County sits in the Southwestern Tablelands — EPA Level III, inside the wider Great Plains. One consistent ecological setting across the whole county.
What Grows in Mitchell County
We scored all 1,086 plants against Mitchell County's own USDA zone 8a and its own 251-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's Texas profile.
Is it too late to plant in Mitchell County?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 12; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 12 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 18 — 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 gets applied to farmland in Mitchell County
USGS estimates 80,878 lb of Glyphosate on Mitchell County farmland in 2019, its largest by weight, ahead of Dicamba (20,933 lb) and 2,4-d (15,206 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Mitchell County — and how to grow with it.
We checked the federal record across Mitchell County — 60 documented sites across 4 of the 9 source types we track.
The most significant on record: 1 Toxics Release Inventory facility. Active industrial facilities reporting chemical releases to air, water, and land.
The federal record across Mitchell County is a modest one — a typical footprint for a growing area. Nothing here calls for alarm; it's worth knowing which recorded sites sit closest to where you grow, and each one on the map carries its type and location. If one turns out to be a near neighbor, a one-time soil test settles the question.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Mitchell County
Closest first, across Mitchell County. Listing isn't leaking, and distance isn't exposure.
- KENNETH ACUFFUnderground Storage Tanks · 1200 ft
- C CITY TIGERMARTUnderground Storage Tanks · 1200 ft
- MITCHELL COUNTY MAINTENANCE BLDGUnderground Storage Tanks · 1200 ft
- MICHAEL LONGUnderground Storage Tanks · 1200 ft
- BAR-B GAS & DIESELUnderground Storage Tanks · 1200 ft
- COLORADO CITY TRUCK STOPUnderground Storage Tanks · 1200 ft
- LAKE COLORADO CITY STATEUnderground Storage Tanks · 1200 ft
- MITCHELL CTY UTILITYUnderground Storage Tanks · 1200 ft
- LORAINE 66Underground Storage Tanks · 1200 ft
- BOBBY NOBLES DIRT CONTRACTORUnderground Storage Tanks · 1200 ft
- VISA TRUCK STOPUnderground Storage Tanks · 1200 ft
- DOWELL SCHLUMBERGERUnderground Storage Tanks · 1200 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Mitchell County'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 Mitchell County.
Total Sites
60
across Mitchell County
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
across Mitchell County
Severity Distribution
across Mitchell County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Mitchell County, Underground Storage Tanks runs higher than the national average — 53 sites across Mitchell County. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around 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 Mitchell County
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 Mitchell County average
Your land is one point inside Mitchell County
Everything above resolves to Mitchell County as a whole — one PHZM band and one county frost record, read across 583K 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 county 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 county average.
Your Lot vs the Mitchell County Average
Mitchell County Average
- ●USDA Zones 8a, averaged across Mitchell County
- ●One soil character for all of Mitchell County
- ●Frost dates read at Mitchell County's scale: Mar 12 to Nov 18
YOUR Parcel
- ✓Your exact zone, not Mitchell County's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Mitchell County
Pull a site-specific report for your exact address in Mitchell County, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Mitchell County averages can't show:
We read public map data around Mitchell County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Mitchell County average
How we know this about Mitchell County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Mitchell County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Mitchell County
When does frost risk typically end in Mitchell County?
The last hard freeze (28°F) in Mitchell County typically lands around Mar 12, 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 2.
How long is the growing season in Mitchell County?
Measured between 28°F hard freezes, Mitchell County sees about 251 frost-free days — roughly Mar 12 through Nov 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 2 to Nov 4, about 216 days.
Is the soil safe to grow vegetables in Mitchell County?
The federal record around Mitchell County shows 60 documented sites, mostly Underground Storage Tanks entries (53), 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.
Everything above is measured at Mitchell County's scale — its 8a band and its 251-day season. Your yard writes its own version of Mitchell County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads Texas's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Mitchell County’s own scale
8 of the readings below were taken at Mitchell County's own scale — its own ~251-day span between 28°F freezes, the 3 most extensive soil series mapped here and 60 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Mitchell County's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Mitchell County's own 28°F hard-freeze dates and its ~251-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Mitchell CountyUSDA NRCS SSURGO
- 60 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 0.2 miles outFederal environmental registers
- Mitchell County's boundary and the 583,099 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~251-day seasonGrowable Ground crop-matching engine
- Mitchell County sitting wholly inside the Southwestern TablelandsUS EPA Level III Ecoregions
- Which agricultural compounds go onto Mitchell County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Texas grower plans around — written at state scale, so they stay on the state guidefrom Texas
What this page can’t tell you
- How the season shifts across Mitchell County — the ~251 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Mitchell County's 583,099 acreswhy one lot differs from the next →
- Which of those 60 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Mitchell Countyread your own land →