Tripp, South Dakota, sits in USDA hardiness zone 5a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Growers here do well with cabbage, cranberry, lavender, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Tripp, 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 Tripp 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 Tripp — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Tripp — the short answer
Tripp, South Dakota: USDA zone 5a, about 182 days between hard freezes, across 380 acres of city.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 19
- 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
- ~182
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 380 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 Tripp's average, not your lot's — a low corner or a tree line moves it. Against Tripp's 182-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Tripp
Each reading below is measured for Tripp itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredTripp runs about 182 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
MeasuredTripp 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 Tripp is in
Tripp sits in the Northwestern Glaciated Plains — EPA Level III, inside the wider Great Plains. That is read at Tripp's own centroid, and it is not what its county reads: Hutchinson County is mostly Northern Glaciated Plains. The wider page above you is answering a different question about different ground.
What Grows in Tripp
Every plant below cleared Tripp's own zone 5a and its 182-day season. Each card opens that plant's South Dakota profile. How we score.
Is it too late to plant in Tripp?
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 22; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 19 (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. 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 Tripp
Closest first, within ~10 miles of Tripp. Listing isn't leaking, and distance isn't exposure.
- 97N60W17BABANitrate · 200 ft
- 97N60W17BABA2Nitrate · 200 ft
- TRIPP/DELMONT SCHOOL DISTRICTBrownfields · 350 ft
- TRIPP FEED & CHEMICALS INCUnderground Storage Tanks · 400 ft
- OLD HWY SHOPUnderground Storage Tanks · 400 ft
- DONS STANDARD SERVICEUnderground Storage Tanks · 400 ft
- SCHENEFELD MOTORSUnderground Storage Tanks · 500 ft
- CORNER GROCERYUnderground Storage Tanks · 600 ft
- HAAR SERVICE STATIONUnderground Storage Tanks · 750 ft
- HUTCHINSON COUNTYUnderground Storage Tanks · 1300 ft
- JV'SUnderground Storage Tanks · 1300 ft
- DEA - CLANDESTINE DRUG LABBrownfields · 1400 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Tripp'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 Tripp.
Severity Distribution
within ~10 miles of Tripp
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Tripp, Nitrate runs higher than the national average — 46 sites within ~10 miles of Tripp. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Tripp
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 Tripp average
Your land is one point inside Tripp
Everything above resolves to Tripp as a whole — one PHZM band and one 28°F frost record, read across 380 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 Tripp Average
Tripp Average
- ●USDA Zones 5a, averaged across Tripp
- ●One soil character for all of Tripp
- ●Frost dates read at Tripp's scale: Apr 19 to Oct 18
YOUR Parcel
- ✓Your exact zone, not Tripp's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Tripp
Pull a site-specific report for your exact address in Tripp, South Dakota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Tripp averages can't show:
We read public map data around Tripp — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Tripp average
How we know this about Tripp
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 Tripp’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 Tripp
When does frost risk typically end in Tripp?
The last hard freeze (28°F) in Tripp typically lands around Apr 19, 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 10.
When is the first frost in Tripp?
The first hard freeze (28°F) in Tripp 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 182 days after the spring freeze cleared.
How long is the growing season in Tripp?
Measured between 28°F hard freezes, Tripp sees about 182 frost-free days — roughly Apr 19 through Oct 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 10 to Oct 4, about 147 days.
Is the soil safe to grow vegetables in Tripp?
The federal record around Tripp shows 61 documented sites, mostly Nitrate entries (46), the nearest Nitrate 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 Tripp?
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 Tripp's scale — its 5a band and its 182-day season. Your yard writes its own version of Tripp'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 Tripp’s own scale
6 of the readings below were taken at Tripp's own scale — its own ~182-day season between 28°F freezes, the 380 acres it covers and 61 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Tripp's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Tripp's own 28°F hard-freeze dates, about Apr 19 and Oct 18 and the ~182-day span between themNOAA 1991–2020 Climate Normals
- 61 documented contamination sites on the federal record near Tripp, the closest Nitrate record under a tenth of a mile out from the town centreFederal environmental registers
- Tripp's boundary and the 380 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~182-day seasonGrowable Ground crop-matching engine
- Tripp sits in the Northwestern 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 Tripp's 380 acres read through its county's SSURGO summaryfrom Hutchinson County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Hutchinson 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 Hutchinson County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Tripp's 380 acreswhy one lot differs from the next →
- Which side of Tripp you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 380 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate 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 Tripp-wide figureread your own land →