Wayne County, in Missouri, sits in USDA hardiness zone 7a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Well-matched crops include cabbage, hazelnut, 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.
Wayne County lies within the Ozarks — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Wayne County holds more than one microclimate.
Soils and elevations shift across Wayne 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 Wayne County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Wayne County — the short answer
Wayne County, Missouri: USDA zone 7a, about 221 days between hard freezes, across 486K acres.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 28
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 4
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~221
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 486K 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 7a is Wayne County's average, not your lot's — a low corner or a tree line moves it. Against Wayne County's 221-day season, see what your own ground reads.
Heat in Wayne County
Across a year, Wayne County accumulates about 4,037 growing degree days above 50°F, about 284 more than the middle Missouri county — ahead of 99 of Missouri’s 115 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.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Wayne County
Across Wayne County, the ground is predominantly Ultisols, where Clarksville, Scholten, and Alred are the most extensive named soil series. The soil is generally well drained with a very gravelly silt loam surface. Topsoil pH runs about 4.6–5.6, strongly acidic. Rainfall drains through hydrologic group B soils.
Soil order
Ultisols
Drainage
Well drained
Prime farmland
4%
Hydric soils
3%
Soil still varies lot by lot — soil types explained.
How the ground varies across Wayne County
The USDA soil survey maps 44% of Wayne County as well drained — but another 56% drains differently: 30% somewhat excessively drained, 17% moderately well drained.
Clarksville is the most extensive named soil at 22% of mapped acres, then Scholten (15%) and Alred (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 Wayne County
Each reading below is measured for Wayne 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 Wayne County are well drained, in hydrologic group B — 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 Wayne County runs about pH 4.6–5.6, on the acidic side.
Blueberries, potatoes, and rhododendrons thrive in it, but most vegetables start locking out nutrients below about pH 6.0 and grow pale and stunted no matter how much you feed them.
A measured lime application raises pH for the crops that need it — but test first, because the right rate depends on your own soil, not the county average.
USDA NRCS SSURGO
Season length
MeasuredWayne County runs about 221 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
MeasuredWayne County sits in USDA hardiness zone 7a.
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 Wayne County is in
Wayne County sits in the Ozark Highlands — EPA Level III, inside the wider Eastern Temperate Forests. One consistent ecological setting across the whole county.
What Grows in Wayne County
We scored all 1,086 plants against Wayne County's own USDA zone 7a and its own 221-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 Missouri profile.
Is it too late to plant in Wayne County?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 28; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 4 — 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.
Documented around Wayne County
Survey cells within 31 miles of Wayne County checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 219 miles off. What to watch for.
What gets applied to farmland in Wayne County
USGS estimates 14,594 lb of Glyphosate on Wayne County farmland in 2019, its largest by weight, ahead of 2,4-d (8,956 lb) and Metolachlor & Metolachlor-s (5,357 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 Wayne County — and how to grow with it.
We checked the federal record across Wayne County — 74 documented sites across 6 of the 9 source types we track.
The most significant on record: 1 Superfund site (none NPL-listed). 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 Wayne 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 Wayne County
Closest first, across Wayne County. Listing isn't leaking, and distance isn't exposure.
- BERGERS GAS MARTUnderground Storage Tanks · 1.0 mi
- GARY HANES TIRE & OIL COUnderground Storage Tanks · 1.1 mi
- ABANDONED FARM ON PUBLIC LANDUnderground Storage Tanks · 1.1 mi
- T28N R05E 01ACC1Nitrate · 1.1 mi
- T28N R05E 01Nitrate · 1.2 mi
- PLEASANT VALLEY MOBILUnderground Storage Tanks · 3.4 mi
- GRIFFITH LABORATORIES USAToxics Release Inventory · 4.4 mi
- SILVA MAINT LOTUnderground Storage Tanks · 5.1 mi
- HOLLIDAY LANDINGUnderground Storage Tanks · 5.5 mi
- LIBLA INDUSTRIES INCUnderground Storage Tanks · 6.5 mi
- well OZ-17Nitrate · 8.3 mi
- PARK ROAD GROCERYUnderground Storage Tanks · 8.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Wayne 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 Wayne County.
Total Sites
74
across Wayne County
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
across Wayne County
Severity Distribution
across Wayne County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Wayne County, Underground Storage Tanks runs higher than the national average — 51 sites across Wayne 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 Wayne 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 Wayne County average
Your land is one point inside Wayne County
Everything above resolves to Wayne County as a whole — one PHZM band and one county frost record, read across 486K 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 Wayne County Average
Wayne County Average
- ●USDA Zones 7a, averaged across Wayne County
- ●One soil character for all of Wayne County
- ●Frost dates read at Wayne County's scale: Mar 28 to Nov 4
YOUR Parcel
- ✓Your exact zone, not Wayne County's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Wayne County
Pull a site-specific report for your exact address in Wayne County, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Wayne County averages can't show:
We read public map data around Wayne County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Wayne County average
How we know this about Wayne 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 Wayne County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Wayne County
When does frost risk typically end in Wayne County?
The last hard freeze (28°F) in Wayne County typically lands around Mar 28, 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 18.
How long is the growing season in Wayne County?
Measured between 28°F hard freezes, Wayne County sees about 221 frost-free days — roughly Mar 28 through Nov 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 18 to Oct 21, about 186 days.
Is the soil safe to grow vegetables in Wayne County?
The federal record around Wayne County is a meaningful one — 74 documented sites, mostly Underground Storage Tanks entries (51), the nearest Underground Storage Tanks record about 1.0 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 Wayne County's scale — its 7a band and its 221-day season. Your yard writes its own version of Wayne 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 Missouri's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Wayne County’s own scale
8 of the readings below were taken at Wayne County's own scale — its own ~221-day span between 28°F freezes, the 3 most extensive soil series mapped here and 74 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Wayne County's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Wayne County's own 28°F hard-freeze dates and its ~221-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Wayne CountyUSDA NRCS SSURGO
- 74 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 1.0 miles outFederal environmental registers
- Wayne County's boundary and the 485,879 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~221-day seasonGrowable Ground crop-matching engine
- Wayne County sitting wholly inside the Ozark HighlandsUS EPA Level III Ecoregions
- Which agricultural compounds go onto Wayne County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Missouri grower plans around — written at state scale, so they stay on the state guidefrom Missouri
What this page can’t tell you
- How the season shifts across Wayne County — the ~221 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 Wayne County's 485,879 acreswhy one lot differs from the next →
- Which of those 74 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 Wayne Countyread your own land →