Yes — Strong Match
rapeseed (zones 4-10) covers every zone Nebraska contains (4b-6a), so hardiness is not what limits it anywhere in the state.
Rapeseed in Nebraska — the short answer
Rapeseed in Nebraska: hardy in zones 4–10, full sun, against a state median of ~181 frost-free days.
- Plant zones
- 4-10
- 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
- Nebraska zones
- 4b-6a
- USDA PHZM 2023
- Frost window
- Apr 12 - Apr 26 – Oct 15 - Oct 21
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 134 days
- NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze
- Days to maturity
- 75 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.
Rapeseed is grown as an annual, so your winter zone isn't the deciding factor — your frost-free window is. A typical Nebraska site runs ~181 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 rapeseed against your land's actual frost dates, sun, and soil.
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Nebraska is not one climate
A single Nebraska answer averages 93 counties whose growing seasons are 73 days apart — from 134 frost-free days in Sioux County to 207 in Sarpy County. Which end of that your land sits nearer changes what rapeseed can finish before the first hard freeze.
The middle half of 93 counties runs 173–191 days, with a median of 181 days — a 73-day span end to end.
Measured across 93 Nebraska counties. NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze. 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 Nebraska Fits Best
Even within Nebraska's zones 4b-6a, county microclimates differ enough to change what thrives. These counties carry the closest zone match for rapeseed (USDA PHZM 2023):
Zone Comparison
Rapeseed Needs
- USDA Zones: 4-10
- Frost-Free Days: 90+
- Sun: Full Sun
- Mature size: 4 ft tall
- Drought tolerance: Medium
Nebraska Has
- USDA Zones: 4b-6a
- Last Hard Freeze (28°F): Apr 12 - Apr 26
- First Hard Freeze (28°F): Oct 15 - Oct 21
- Annual Rainfall: 15-34 inches
- Common Soils: Loess, Sandy loam (Sandhills), Silt loam
Plant Zone Range (zones 4-10)
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 Rapeseed in Nebraska
The frost window
Across Nebraska, the last spring hard freeze (28°F) clears between Apr 12 and Apr 26, and the first fall hard freeze lands between Oct 15 and Oct 21 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 172-day window you can count on — up to 192 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
Rapeseed takes cold down to about 10°F before a freeze kills it (FAO ECOCROP), so you can plant on the early side of Nebraska'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
Rapeseed is direct-sown where it grows rather than started under cover, so there is no seed-tray head start to bank — Nebraska'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 75 days to maturity (Growable Ground Plant Database), counting from the last hard freeze it ripens with 97 days to spare even in Nebraska's tightest freeze scenario — room for a later start or a second sowing.
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 rapeseed survives winter here. Whether the season is long enough — and warm enough — is a different question.
Frost-free days
Rapeseed wants 90+ frost-free days; a typical Nebraska site sees ~181 (NOAA Regional Climate Centers ACIS, 1991-2020). That leaves comfortable headroom for succession planting.
Growing degree days
Rapeseed needs ~1000 GDD (base 50°F) to ripen. The state median runs ~2648 GDD (from PRISM 1991-2020 climate normals), so Nebraska'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
Rapeseed tolerates a wide pH range (pH 5-8) — 3 units, acid ground through alkaline — so soil acidity is rarely what limits it in Nebraska. 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 and 7.5 — worth knowing before you decide whether a Nebraska soil test result is a problem or just a number. Drainage matters: this plant wants well (dry spells). If your Nebraska site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
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. Nebraska soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
What Else to Consider for Rapeseed in Nebraska
Zone compatibility tells you about winter cold survival — but Nebraska growers also need to think about:
Low western rainfall (15 inches) requires irrigation
Extreme wind exposure on open plains
Hail damage during severe storm season
What to actually do about these — and the constraints that apply to every Nebraska grower, not just rapeseed — is covered on the Nebraska growing guide.
Timing shifts within Nebraska
Rapeseed needs about 90 days of frost-free season to complete its cycle. Even Sioux County — Nebraska’s shortest season at 134 frost-free days — clears that by 44 days, so season length isn’t the constraint anywhere in Nebraska. What varies is your own parcel.
Across Nebraska’s 93 counties the frost-free season runs from 134 days in Sioux County to 207 days in Sarpy County — a spread of 73 days, which is why a single statewide planting date misleads. The median Nebraska county sees 181 frost-free days, leaving rapeseed about 91 days of slack on a typical parcel — room for a second sowing where the season runs long.
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"). Rapeseed's 90-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
Rapeseed draws honeybees and native bees (moderate value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, rapeseed can only work that bloom inside Nebraska's frost window — roughly 181 days, opening after the last 28°F freeze (Apr 12 - Apr 26) and closing at the first (Oct 15 - Oct 21), per NOAA Regional Climate Centers ACIS, 1991-2020.
Nebraska Cooperative Extension
For Nebraska-specific cultivar recommendations, planting calendars, and pest pressure for rapeseed, the canonical source is Nebraska Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Rapeseed native to Nebraska?
No — the USDA PLANTS Database lists Rapeseed as introduced rather than native in the Lower 48, so it is not part of Nebraska's native flora. It grows here as a garden plant; pairing it with a few Nebraska natives keeps local pollinators fed too.
Looking for plants that belong here? The Nebraska 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 Rapeseed in Nebraska
When can I plant Rapeseed in Nebraska?
Nebraska's last spring hard freeze (28°F) clears between Apr 12 and Apr 26, and the first fall hard freeze lands between Oct 15 and Oct 21 (NOAA Regional Climate Centers ACIS, 1991-2020). Rapeseed takes cold to about 10°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 Rapeseed mature before first frost in Nebraska?
Yes — Rapeseed matures in 75 days (Growable Ground Plant Database), and Nebraska's dependable hard-freeze-free window runs 172 days (NOAA Regional Climate Centers ACIS, 1991-2020), leaving 97 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 Rapeseed grown in across Nebraska?
Nebraska spans USDA hardiness zones 4b-6a (USDA ARS PHZM 2023). Rapeseed carries a range of zones 4-10, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Nebraska site have?
A typical Nebraska site sees ~181 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Rapeseed needs 90+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Rapeseed native to Nebraska?
No — the USDA PLANTS Database lists Rapeseed as introduced rather than native in the Lower 48, so it is not part of Nebraska's native flora. It grows here as a garden plant; pairing it with a few Nebraska natives keeps local pollinators fed too.
How should I amend the soil for Rapeseed in Nebraska?
Rapeseed 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 Nebraska site — amend for drainage and organic matter first.
Will Rapeseed actually grow on my specific land in Nebraska?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores rapeseed 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 Nebraska
State-level data is a sketch. Your Growable Ground report scores rapeseed against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Nebraska rapeseed averages can't show:
We read public map data around Nebraska — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Nebraska rapeseed average
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