Yes — Strong Match
sword fern (zones 4-10) covers every zone Nebraska contains (4b-6a), so hardiness is not what limits it anywhere in the state.
Sword Fern in Nebraska — the short answer
Sword Fern in Nebraska: hardy in zones 4–10, part 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
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.
Nebraska spans zones 4b-6a, but your yard sits in exactly one — and slope, tree cover, and cold-air pockets nudge it further. Enter your address and we'll score sword fern against your parcel's actual hardiness, soil, and sun.
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Nebraska is not one climate
Nebraska’s winter-low ladder runs across 93 counties, from zone 4.5 in Sioux County to zone 6 in Thayer County. That is 15°F between the two counties’ average coldest night — the difference between sword fern overwintering in the ground and coming under cover.
The middle half of 93 counties runs 5–5.5 zones, with a median of 5.5 zones — a 1.5-zone span end to end.
Measured across 93 Nebraska 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 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 sword fern (USDA PHZM 2023):
Zone Comparison
Sword Fern Needs
- USDA Zones: 4-10
- Sun: Part Sun
- Mature size: 4 ft tall
- Drought tolerance: Low
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 Sword Fern 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.
Winter standing
Nebraska runs as cold as USDA zone 4, and no sourced winter-hardiness floor is on record for sword fern, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether sword fern is a permanent planting or a replant-every-spring crop for you turns on your own zone within Nebraska; check its hardiness range against that before treating it as long-lived ground.
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.
Soil + Drainage Fit
Sword Fern likes near-neutral soil (pH 5.8-7.5). That's the common-ground band across Nebraska's loess and sandy loam (sandhills) — a soil test confirms it for your site. Drainage requirement: poorly (saturated >50% of year). A soil-survey lookup (NRCS SSURGO) flags whether your specific site matches.
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 Sword Fern 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 sword fern — is covered on the Nebraska growing guide.
Where in Nebraska Sword Fern Is Zone-Hardy
Sword Fern is rated for USDA zones 4–10. Every one of Nebraska’s 93 counties sits inside that band — from Sioux County at zone 4b to Thayer County at zone 6a — so winter cold is not what decides this plant anywhere in the state. What is left to vary is your own parcel: slope, shelter and cold-air drainage routinely move a site half a zone either way from the county figure.
Across those 93 counties Nebraska’s winter-low ladder runs from zone 4b in Sioux County to zone 6a in Thayer County — 1.5 USDA zones of spread, which is 15°F between the two counties’ average coldest night of the year. That is why a statewide hardiness answer is where you start and not where you finish.
The planting window moves with it. Sioux County holds its last hard freeze (28°F) until about May 14, while Douglas County is clear by Apr 5 — 39 days apart. Set sword fern out on your county’s date, not the state’s.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. County last-freeze dates: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F killing freeze — earlier than the folk 32°F "last frost". Sword Fern’s zone 4–10 band: USDA PLANTS / Growable Ground plant database. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
Nebraska Cooperative Extension
For Nebraska-specific cultivar recommendations, planting calendars, and pest pressure for sword fern, the canonical source is Nebraska Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Sword Fern native to Nebraska?
Sword Fern is native to parts of the Lower 48, but the USDA PLANTS Database (accessed 2026-07-01) does not document a native range in Nebraska. It can still earn a place in a Nebraska garden — the zone comparison above tells you whether it will thrive.
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 Sword Fern in Nebraska
When can I plant Sword Fern 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). No sourced winter-hardiness floor is on record for Sword Fern, so this page does not state whether it overwinters in Nebraska and publishes no fall establishment date for it — check its hardiness range against your own zone before treating it as a permanent planting.
What hardiness zone is Sword Fern grown in across Nebraska?
Nebraska spans USDA hardiness zones 4b-6a (USDA ARS PHZM 2023). Sword Fern 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). Sword Fern should be matched against that window, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Sword Fern native to Nebraska?
Sword Fern is native to parts of the Lower 48, but the USDA PLANTS Database (accessed 2026-07-01) does not document a native range in Nebraska. It can still earn a place in a Nebraska garden — the zone comparison above tells you whether it will thrive.
How should I amend the soil for Sword Fern in Nebraska?
Sword Fern prefers pH 5.8-7.5 and poorly (saturated >50% of year) drainage (USDA PLANTS). That sits in the common-ground band across Nebraska soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Sword Fern actually grow on my specific land in Nebraska?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores sword fern 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 sword fern against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Nebraska sword fern averages can't show:
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