Yes — Strong Match
berseem clover (zones 3-9) covers every zone South Dakota contains (4a-5b), so hardiness is not what limits it anywhere in the state.
Berseem Clover in South Dakota — the short answer
Berseem Clover in South Dakota: hardy in zones 3–9, full sun, against a state median of ~168 frost-free days.
- Plant zones
- 3-9
- Manual horticultural correction (source not retained); NC State Extension and Missouri Botanical Garden, with the remaining rows from other published sources or Growable Ground compilation
- South Dakota zones
- 4a-5b
- USDA PHZM 2023
- Frost window
- Apr 22 - Apr 29 – Oct 9 - Oct 15
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 145 days
- NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze
- Days to maturity
- 90 days
- Growable Ground Plant Database
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — per-field provenance varies and is published with the dataset.
Your yard isn't the whole zone.
Berseem Clover is grown as an annual, so your winter zone isn't the deciding factor — your frost-free window is. A typical South Dakota site runs ~168 frost-free days, but that is a state median, not your yard: slope, trees, and low spots move the last-frost date across a single parcel. Enter your address and we'll score berseem clover against your land's actual frost dates, sun, and soil.
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South Dakota is not one climate
South Dakota’s winter-low ladder runs across 66 counties, from zone 4 in Brown County to zone 5.5 in Custer County. That is 15°F between the two counties’ average coldest night — the difference between berseem clover overwintering in the ground and coming under cover.
The middle half of 66 counties runs 4.5–5 zones, with a median of 4.5 zones — a 1.5-zone span end to end.
Measured across 66 South Dakota counties. USDA PHZM 2023, per county. Quartiles are order statistics — every figure shown is a value a real county recorded, not an interpolation. Your own site sits somewhere inside this range; a parcel report resolves where.
Where in South Dakota Fits Best
Even within South Dakota's zones 4a-5b, county microclimates differ enough to change what thrives. These counties carry the closest zone match for berseem clover (USDA PHZM 2023):
Zone Comparison
Berseem Clover Needs
- USDA Zones: 3-9
- Frost-Free Days: 60+
- Sun: Full Sun
- Mature size: 2 ft tall
- Drought tolerance: Low
South Dakota Has
- USDA Zones: 4a-5b
- Last Hard Freeze (28°F): Apr 22 - Apr 29
- First Hard Freeze (28°F): Oct 9 - Oct 15
- Annual Rainfall: 14-26 inches
- Common Soils: Prairie loam, Clay, Sandy loam
Plant Zone Range (zones 3-9)
Preferred Soil pH
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS, and university Extension sources — per-field provenance varies and is published with the dataset. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Berseem Clover in South Dakota
The frost window
Across South Dakota, the last spring hard freeze (28°F) clears between Apr 22 and Apr 29, and the first fall hard freeze lands between Oct 9 and Oct 15 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 163-day window you can count on — up to 176 days on a mild site in a kind year. That marks the hard freeze, not the last light frost, so tender transplants usually wait another 2-3 weeks.
Frost hardiness
Berseem Clover takes cold down to about 20°F before a freeze kills it (FAO ECOCROP), so you can plant on the early side of South Dakota's window — even a few weeks before the final hard freeze. That is the point where cold damages growing tissue, not a winter-survival floor — an established perennial comes through far colder while dormant, which is what its hardiness zone tells you.
When to start the seed
Berseem Clover is direct-sown where it grows rather than started under cover, so there is no seed-tray head start to bank — South Dakota's dates above are the whole calendar for it. That makes the last-freeze date the binding constraint, and a warmer pocket of your own yard is worth more to this crop than it is to a transplanted one.
Days to maturity vs. the window
At 90 days to maturity (Growable Ground Plant Database), counting from the last hard freeze it ripens with 73 days to spare even in South Dakota's tightest freeze scenario — room for a later start or a second sowing.
Timing tuned to sub-state frost dates — Lawrence County, not the statewide average.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: Growable Ground Plant Database — frost-free days from FAO ECOCROP, days to harvest from university Extension production guides, and growing-degree-day and chill-hour minimums that are compilation estimates rather than published figures. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Growing Season Fit
The zone check says berseem clover survives winter here. Whether the season is long enough — and warm enough — is a different question.
Frost-free days
Berseem Clover wants 60+ frost-free days; a typical South Dakota site sees ~168 (NOAA Regional Climate Centers ACIS, 1991-2020). That leaves comfortable headroom for succession planting.
Growing degree days
Berseem Clover needs ~1000 GDD (base 50°F) to ripen. The state median runs ~2356 GDD (from PRISM 1991-2020 climate normals), so South Dakota's typical season clears that easily.
GDD and chill-hour figures are computed from PRISM 1991-2020 monthly climate normals; frost-free days from NOAA Regional Climate Centers ACIS, 1991-2020. Each is the state median across its counties (P25/P75 span the within-state spread). Hardiness-zone range is USDA PHZM 2023.
Soil + Drainage Fit
Berseem Clover tolerates a wide pH range (pH 5-8) — 3 units, acid ground through alkaline — so soil acidity is rarely what limits it in South Dakota. A soil test is still worth having, but for what else it tells you about this site, not to clear this plant. It will grow across that whole span, but it does best between pH 6.5 and 8 — worth knowing before you decide whether a South Dakota soil test result is a problem or just a number. Drainage matters: this plant wants well (dry spells). If your South Dakota site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Your land, not the state average
South Dakota's soils run mostly loam, but SSURGO maps the series, texture, and drainage under your exact parcel. What matters for berseem clover is the horizon its roots actually work, not the surface. That map unit, not the state average, decides how berseem clover performs.
Check your parcel → Source: USDA NRCS SSURGO.
Plant pH requirements: FAO ECOCROP and USDA PLANTS, with the remaining rows from other published sources or Growable Ground compilation. Drainage: FAO ECOCROP, with the remaining rows from other published sources or Growable Ground compilation. South Dakota soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
What Else to Consider for Berseem Clover in South Dakota
Zone compatibility tells you about winter cold survival — but South Dakota growers also need to think about:
Extreme cold and short growing season
Low rainfall in western SD
Wind exposure on the open prairie
Growing berseem clover here specifically
South Dakota's soils run mostly loam (Mollisols), and whether that suits berseem clover's pH 5.0–8.0 preference comes down to your exact parcel, not the statewide picture.
Pull your parcel's SSURGO map unit, test pH, and amend toward berseem clover's 5.0–8.0 target before planting. How to handle it →
What to actually do about these — and the constraints that apply to every South Dakota grower, not just berseem clover — is covered on the South Dakota growing guide.
Timing shifts within South Dakota
South Dakota isn't one climate. In Lawrence County, the last hard freeze (28°F) holds until about May 12 — roughly 17 days later than the recorded state median — so plant berseem clover to your county's window, not the statewide date.
Berseem Clover needs about 60 days of frost-free season to complete its cycle. Even Lawrence County — South Dakota’s shortest season at 145 frost-free days — clears that by 85 days, so season length isn’t the constraint anywhere in South Dakota. What varies is your own parcel.
County last-freeze dates and frost-free day counts: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F freeze (earlier than the folk 32°F "last frost"). Berseem Clover's 60-day requirement: USDA PLANTS / Growable Ground plant database (minimum frost-free days). A parcel report resolves your address's own frost dates.
Pollinator + Wildlife Value
Berseem Clover draws honeybees, native bees, and butterflies (high value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, berseem clover can only work that bloom inside South Dakota's frost window — roughly 168 days, opening after the last 28°F freeze (Apr 22 - Apr 29) and closing at the first (Oct 9 - Oct 15), per NOAA Regional Climate Centers ACIS, 1991-2020.
South Dakota Cooperative Extension
For South Dakota-specific cultivar recommendations, planting calendars, and pest pressure for berseem clover, the canonical source is SDSU Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Berseem Clover native to South Dakota?
No — the USDA PLANTS Database lists Berseem Clover as introduced rather than native in the Lower 48, so it is not part of South Dakota's native flora. It grows here as a garden plant; pairing it with a few South Dakota natives keeps local pollinators fed too.
Looking for plants that belong here? The South Dakota growing guide lists USDA-documented natives for the state.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Berseem Clover in South Dakota
When can I plant Berseem Clover in South Dakota?
South Dakota's last spring hard freeze (28°F) clears between Apr 22 and Apr 29, and the first fall hard freeze lands between Oct 9 and Oct 15 (NOAA Regional Climate Centers ACIS, 1991-2020). Berseem Clover takes cold to about 20°F before a freeze kills it (FAO ECOCROP — the point where cold damages growing tissue, not a winter-survival floor), so plant on the early side of that window — even ahead of the final hard freeze.
Can Berseem Clover mature before first frost in South Dakota?
Yes — Berseem Clover matures in 90 days (Growable Ground Plant Database), and South Dakota's dependable hard-freeze-free window runs 163 days (NOAA Regional Climate Centers ACIS, 1991-2020), leaving 73 days of margin. Plant once the last hard freeze has passed — two to three weeks later for anything tender — and it ripens ahead of the first fall freeze.
What hardiness zone is Berseem Clover grown in across South Dakota?
South Dakota spans USDA hardiness zones 4a-5b (USDA ARS PHZM 2023). Berseem Clover carries a range of zones 3-9, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical South Dakota site have?
A typical South Dakota site sees ~168 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Berseem Clover needs 60+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date. In cooler counties like Lawrence, the freeze-free season runs shorter than the state average, so verify your own county's window.
Is Berseem Clover native to South Dakota?
No — the USDA PLANTS Database lists Berseem Clover as introduced rather than native in the Lower 48, so it is not part of South Dakota's native flora. It grows here as a garden plant; pairing it with a few South Dakota natives keeps local pollinators fed too.
How should I amend the soil for Berseem Clover in South Dakota?
Berseem Clover tolerates pH 5-8 and well (dry spells) drainage (Growable Ground Plant Database). That is a 3-unit span, acid ground through alkaline, so pH is rarely what limits this plant on a South Dakota site — amend for drainage and organic matter first.
Will Berseem Clover actually grow on my specific land in South Dakota?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores berseem clover against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in South Dakota
State-level data is a sketch. Your Growable Ground report scores berseem clover against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that South Dakota berseem clover averages can't show:
We read public map data around South Dakota — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the South Dakota berseem clover average
Explore More
Growing guides for berseem clover
Analysis by the Growable Ground research team, grounded in USDA PLANTS, USDA NRCS SSURGO, NOAA Climate Normals (1991-2020), and named Cooperative Extension sources. How we know →
Cite this dataset
Kirchick, M. (2026). Growable Ground Plant Database [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21435643
Licensed CC BY-NC 4.0. DOI 10.5281/zenodo.21435643
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