Wessington Springs, South Dakota, sits in USDA hardiness zone 5a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
The conditions favor cabbage, cranberry, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Wessington Springs, 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 Wessington Springs 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 Wessington Springs — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Wessington Springs — the short answer
Wessington Springs, South Dakota: USDA zone 5a, about 183 days between hard freezes, across 1K acres of city.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~183
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 1K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 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 5a is Wessington Springs's average, not your lot's — a low corner or a tree line moves it. Against Wessington Springs's 183-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Wessington Springs
Each reading below is measured for Wessington Springs itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWessington Springs runs about 183 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredWessington Springs sits in USDA hardiness zone 5a.
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 Wessington Springs is in
Wessington Springs sits in the Northern Glaciated Plains — EPA Level III, inside the wider Great Plains. That is read at Wessington Springs's own centroid, and it is not what its county reads: Jerauld County is mostly Northwestern Glaciated Plains. The wider page above you is answering a different question about different ground.
What Grows in Wessington Springs
Every plant below cleared Wessington Springs's own zone 5a and its 183-day season. Each card opens that plant's South Dakota profile. How we score.
Is it too late to plant in Wessington Springs?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 18 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
What's on the federal record near Wessington Springs
Closest first, within ~10 miles of Wessington Springs. Listing isn't leaking, and distance isn't exposure.
- WESSINGTON SPRINGS HIGH SCHOOLBrownfields · 350 ft
- JERAULD CO FARMERS UNIONUnderground Storage Tanks · 450 ft
- HUMM DINGERUnderground Storage Tanks · 600 ft
- JERAULD CO HWY DEPTUnderground Storage Tanks · 900 ft
- WESSINGTON SPRINGS SCH. DIST.Underground Storage Tanks · 1200 ft
- MOTOR CLINICUnderground Storage Tanks · 2000 ft
- AVERA WESKOTA MEMORIAL MED CTRUnderground Storage Tanks · 2100 ft
- ALS STANDARDUnderground Storage Tanks · 0.5 mi
- 108N64W31CCDDNitrate · 2.1 mi
- WESSINGTON SPRINGS WIND ENERGY CENTERBrownfields · 3.7 mi
- 106N64W 6AAAANitrate · 4.0 mi
- 108N64W16DCDDNitrate · 5.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Wessington Springs'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 Wessington Springs.
Sources Checked
within ~10 miles of Wessington Springs
Severity Distribution
within ~10 miles of Wessington Springs
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Wessington Springs, Nitrate runs higher than the national average — 30 sites within ~10 miles of Wessington Springs. That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Wessington Springs
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 Wessington Springs average
Your land is one point inside Wessington Springs
Everything above resolves to Wessington Springs as a whole — one PHZM band and one 28°F frost record, read across 1K 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 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 Wessington Springs Average
Wessington Springs Average
- ●USDA Zones 5a, averaged across Wessington Springs
- ●One soil character for all of Wessington Springs
- ●Frost dates read at Wessington Springs's scale: Apr 18 to Oct 18
YOUR Parcel
- ✓Your exact zone, not Wessington Springs's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Wessington Springs
Pull a site-specific report for your exact address in Wessington Springs, South Dakota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Wessington Springs averages can't show:
We read public map data around Wessington Springs — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Wessington Springs average
How we know this about Wessington Springs
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 Wessington Springs’s own record; 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 Wessington Springs
When does frost risk typically end in Wessington Springs?
The last hard freeze (28°F) in Wessington Springs typically lands around Apr 18, 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 May 9.
When is the first frost in Wessington Springs?
The first hard freeze (28°F) in Wessington Springs typically arrives around Oct 18, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 4, so the watching starts about Sep 18 — about 183 days after the spring freeze cleared.
How long is the growing season in Wessington Springs?
Measured between 28°F hard freezes, Wessington Springs sees about 183 frost-free days — roughly Apr 18 through Oct 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 9 to Oct 4, about 148 days.
Is the soil safe to grow vegetables in Wessington Springs?
The federal record around Wessington Springs is light — 40 documented sites across the 9 federal source types we checked, mostly Nitrate entries (30), the nearest Brownfields 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 Wessington Springs?
From about Sep 18 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 Oct 18 (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 Oct 18. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Wessington Springs's scale — its 5a band and its 183-day season. Your yard writes its own version of Wessington Springs'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 Wessington Springs’s own scale
6 of the readings below were taken at Wessington Springs's own scale — its own ~183-day season between 28°F freezes, the 1,153 acres it covers and 40 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Wessington Springs's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Wessington Springs's own 28°F hard-freeze dates, about Apr 18 and Oct 18 and the ~183-day span between themNOAA 1991–2020 Climate Normals
- 40 documented contamination sites on the federal record near Wessington Springs, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Wessington Springs's boundary and the 1,153 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~183-day seasonGrowable Ground crop-matching engine
- Wessington Springs sits in the Northern Glaciated Plains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Wessington Springs's 1,153 acres read through its county's SSURGO summaryfrom Jerauld County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Jerauld County
- The growing challenges every South Dakota grower plans around — written at state scale, so they stay on the state guidefrom South Dakota
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Jerauld County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Wessington Springs's 1,153 acreswhy one lot differs from the next →
- Which side of Wessington Springs you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,153 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Wessington Springs-wide figureread your own land →
More in South Dakota
Wider growing context
What grows across South DakotaWessington Springs sits outside our named growing regions, so South Dakota as a whole is its closest context here.
Nearby growing guides