Elkton, South Dakota, sits in USDA hardiness zone 4b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Among the crops suited to this profile: cabbage, cranberry, turkish rocket, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Elkton, 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 Elkton 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 Elkton — soil, climate, flood, and parcel records. How we handle your address.
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Elkton — the short answer
Elkton, South Dakota: USDA zone 4b, about 169 days between hard freezes, across 956 acres of city.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 24
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~169
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 956 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 4b is Elkton's average, not your lot's — a low corner or a tree line moves it. Against Elkton's 169-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Elkton
Each reading below is measured for Elkton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredElkton runs about 169 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
MeasuredElkton sits in USDA hardiness zone 4b.
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 Elkton is in
Elkton sits in the Northern Glaciated Plains — EPA Level III, inside the wider Great Plains. That is read at Elkton's own centroid rather than borrowed from Brookings County.
What Grows in Elkton
Every plant below cleared Elkton's own zone 4b and its 169-day season. Each card opens that plant's South Dakota profile. How we score.
Is it too late to plant in Elkton?
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 Mar 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 24 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 10 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
What's on the federal record near Elkton
Closest first, within ~10 miles of Elkton. Listing isn't leaking, and distance isn't exposure.
- MYERS STANDARD SERVICEUnderground Storage Tanks · 300 ft
- ELKTON FARMERS UNION CO-OP OILUnderground Storage Tanks · 900 ft
- TWIN CITY FAN LTDBrownfields · 1300 ft
- ELKTON SCHOOLBrownfields · 1500 ft
- JAMES STUEFENUnderground Storage Tanks · 1900 ft
- SKYVIEW CARDTROL (FORMER CENEX C-STORE)Underground Storage Tanks · 0.5 mi
- 109N47W21BDDNitrate · 1.0 mi
- 109N47W21CBDNitrate · 1.3 mi
- PJ'SUnderground Storage Tanks · 2.3 mi
- 109N47W 9AAAANitrate · 2.4 mi
- 109N47W33CDDDNitrate · 2.6 mi
- 109N47W33DDDDNitrate · 2.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Elkton'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 Elkton.
Total Sites
58
within ~10 miles of Elkton
Risk Level
Moderate
Highest-severity
6 concentrated animal feeding operations
Sources Checked
within ~10 miles of Elkton
Severity Distribution
within ~10 miles of Elkton
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Elkton, two things run higher than the national average within ~10 miles of Elkton — CAFO (6 sites) and Nitrate (26 sites). That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Elkton
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 Elkton average
Your land is one point inside Elkton
Everything above resolves to Elkton as a whole — one PHZM band and one 28°F frost record, read across 956 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 Elkton Average
Elkton Average
- ●USDA Zones 4b, averaged across Elkton
- ●One soil character for all of Elkton
- ●Frost dates read at Elkton's scale: Apr 24 to Oct 10
YOUR Parcel
- ✓Your exact zone, not Elkton's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Elkton
Pull a site-specific report for your exact address in Elkton, South Dakota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Elkton averages can't show:
We read public map data around Elkton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Elkton average
How we know this about Elkton
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 Elkton’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 Elkton
When does frost risk typically end in Elkton?
The last hard freeze (28°F) in Elkton typically lands around Apr 24, 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 15.
When is the first frost in Elkton?
The first hard freeze (28°F) in Elkton typically arrives around Oct 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 26, so the watching starts about Sep 10 — about 169 days after the spring freeze cleared.
How long is the growing season in Elkton?
Measured between 28°F hard freezes, Elkton sees about 169 frost-free days — roughly Apr 24 through Oct 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 15 to Sep 26, about 134 days.
Is the soil safe to grow vegetables in Elkton?
The federal record around Elkton shows 58 documented sites, mostly Nitrate entries (26), the nearest Underground Storage Tanks record under a tenth of a mile 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 Elkton?
From about Sep 10 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 10 (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 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Elkton's scale — its 4b band and its 169-day season. Your yard writes its own version of Elkton'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 Elkton’s own scale
6 of the readings below were taken at Elkton's own scale — its own ~169-day season between 28°F freezes, the 956 acres it covers and 58 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Elkton's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Elkton's own 28°F hard-freeze dates, about Apr 24 and Oct 10 and the ~169-day span between themNOAA 1991–2020 Climate Normals
- 58 documented contamination sites on the federal record near Elkton, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Elkton's boundary and the 956 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~169-day seasonGrowable Ground crop-matching engine
- The ecoregion at Elkton's own centroid, the Northern Glaciated PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Elkton's 956 acres read through its county's SSURGO summaryfrom Brookings County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Brookings 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 Brookings County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Elkton's 956 acreswhy one lot differs from the next →
- Which side of Elkton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 956 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Elkton-wide figureread your own land →