Coahoma County, in Mississippi, sits in USDA hardiness zone 8b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Expect cabbage, fig, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Coahoma County lies within the Mississippi Delta — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Coahoma County holds more than one microclimate.
Soils and elevations shift across Coahoma 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 Coahoma County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Coahoma County — the short answer
Coahoma County, Mississippi: USDA zone 8b, about 275 days between hard freezes, across 354K acres.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 25
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 27
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~275
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 354K 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 8b is Coahoma County's average, not your lot's — a low corner or a tree line moves it. Against Coahoma County's 275-day season, see what your own ground reads.
Heat and winter chill in Coahoma County
Across a year, Coahoma County accumulates about 5,175 growing degree days above 50°F, about 223 fewer than the middle Mississippi county — ahead of 26 of Mississippi’s 82 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 1,519 hours below 45°F, 327 more than the Mississippi middle of 1,192. 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 Coahoma County
Across Coahoma County, the ground is predominantly Alfisols, where Dundee, Dowling, and Sharkey are the most extensive named soil series. The soil is generally somewhat poorly drained with a clay surface. Topsoil pH runs about 5.3–6.8, moderately acidic. Rainfall drains through hydrologic group D soils.
Soil order
Alfisols
Drainage
Somewhat poorly drained
Prime farmland
63%
Hydric soils
53%
Soil still varies lot by lot — soil types explained.
How the ground varies across Coahoma County
The USDA soil survey maps 35% of Coahoma County as somewhat poorly drained — but another 56% drains differently: 32% poorly drained, 14% very poorly drained.
Dundee is the most extensive named soil at 18% of mapped acres, then Dowling (15%) and Sharkey (14%).
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 Coahoma County
Each reading below is measured for Coahoma 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 Coahoma County are somewhat poorly drained, in hydrologic group D — ground that sheds water slowly.
Beds can stay saturated for days after heavy rain, and the roots of most vegetables, berries, and fruit trees suffocate or rot in soil that never drains.
Raised beds or mounded rows lift roots above the wet zone; choose water-tolerant crops for the lowest spots.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Coahoma County runs about pH 5.3–6.8, close to neutral.
This is the range most vegetables prefer — one correction you probably do not have to make, which is genuinely good news for a new bed.
Keep it there with compost rather than lime or sulfur, and only amend if your own soil test says otherwise.
USDA NRCS SSURGO
Season length
MeasuredCoahoma County runs about 275 days between hard freezes — 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
MeasuredCoahoma County 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 Coahoma County is in
Coahoma County sits in the Mississippi Alluvial Plain — EPA Level III, inside the wider Eastern Temperate Forests. One consistent ecological setting across the whole county.
What Grows in Coahoma County
We scored all 1,086 plants against Coahoma County's own USDA zone 8b and its own 275-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 Mississippi profile.
Is it too late to plant in Coahoma County?
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 28; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 25 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 27 — long-season crops need about 90 days of runway, quick greens only 30. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
What gets applied to farmland in Coahoma County
USGS estimates 511,831 lb of Glyphosate on Coahoma County farmland in 2019, its largest by weight, ahead of Metolachlor & Metolachlor-s (236,913 lb) and Metolachlor-s (149,012 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 Coahoma County — and how to grow with it.
We checked the federal record across Coahoma County — 208 documented sites across 6 of the 9 source types we track.
The most significant on record: 1 Superfund site. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
There's a meaningful federal record across Coahoma County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Coahoma County
Closest first, across Coahoma County. Listing isn't leaking, and distance isn't exposure.
- 027J0134 COAHOMANitrate · 0.7 mi
- Westgate ChevronUnderground Storage Tanks · 1.8 mi
- Time SaverUnderground Storage Tanks · 1.9 mi
- Double Quick #102Underground Storage Tanks · 2.1 mi
- Phillips 66 #025249Underground Storage Tanks · 2.1 mi
- Double Quick #103Underground Storage Tanks · 2.1 mi
- Bears GymUnderground Storage Tanks · 2.4 mi
- Hobbs Service StationUnderground Storage Tanks · 2.4 mi
- Hall's Texaco Service StationUnderground Storage Tanks · 2.4 mi
- 027J2013B COAHOMANitrate · 2.4 mi
- 027J2013 COAHOMA (Clarksdale)Nitrate · 2.4 mi
- Clarksdale Public SchoolsUnderground Storage Tanks · 2.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Coahoma 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 Coahoma County.
Sources Checked
across Coahoma County
Severity Distribution
across Coahoma County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Coahoma County, Underground Storage Tanks runs higher than the national average — 140 sites across Coahoma County. 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 Coahoma 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 Coahoma County average
Your land is one point inside Coahoma County
Everything above resolves to Coahoma County as a whole — one PHZM band and one county frost record, read across 354K 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 Coahoma County Average
Coahoma County Average
- ●USDA Zones 8b, averaged across Coahoma County
- ●One soil character for all of Coahoma County
- ●Frost dates read at Coahoma County's scale: Feb 25 to Nov 27
YOUR Parcel
- ✓Your exact zone, not Coahoma County's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Coahoma County
Pull a site-specific report for your exact address in Coahoma County, Mississippi — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Coahoma County averages can't show:
We read public map data around Coahoma County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Coahoma County average
How we know this about Coahoma 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 Coahoma County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Coahoma County
When does frost risk typically end in Coahoma County?
The last hard freeze (28°F) in Coahoma County typically lands around Feb 25, 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 18.
How long is the growing season in Coahoma County?
Measured between 28°F hard freezes, Coahoma County sees about 275 frost-free days — roughly Feb 25 through Nov 27, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 18 to Nov 13, about 240 days.
Is the soil safe to grow vegetables in Coahoma County?
The federal record around Coahoma County is a meaningful one — 208 documented sites, mostly Underground Storage Tanks entries (140), the nearest Nitrate record about 0.7 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
Everything above is measured at Coahoma County's scale — its 8b band and its 275-day season. Your yard writes its own version of Coahoma 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 Mississippi's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Coahoma County’s own scale
8 of the readings below were taken at Coahoma County's own scale — its own ~275-day span between 28°F freezes, the 3 most extensive soil series mapped here and 208 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Coahoma County's own USDA hardiness band, zones 8bUSDA PHZM 2023
- Coahoma County's own 28°F hard-freeze dates and its ~275-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Coahoma CountyUSDA NRCS SSURGO
- 208 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Nitrate record about 0.7 miles outFederal environmental registers
- Coahoma County's boundary and the 353,985 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~275-day seasonGrowable Ground crop-matching engine
- Coahoma County sitting wholly inside the Mississippi Alluvial PlainUS EPA Level III Ecoregions
- Which agricultural compounds go onto Coahoma County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Mississippi grower plans around — written at state scale, so they stay on the state guidefrom Mississippi
What this page can’t tell you
- How the season shifts across Coahoma County — the ~275 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 Coahoma County's 353,985 acreswhy one lot differs from the next →
- Which of those 208 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 Coahoma Countyread your own land →