Unlikely — Zone Mismatch
gladiolus (communis) (zones 7-10) does not overlap with Nebraska's zone range (4b-6a). Growing outdoors is unlikely without significant protection.
One zone short — what would close it
Gladiolus Communis is hardy to zone 7, and the warmest ground in Nebraska is zone 6 — 1 zone short. Planted in open ground it will not survive a Nebraska winter. To grow it here, grow gladiolus communis in a hoop house or unheated greenhouse — its modeled 1.5-zone lift covers this gap.
A hoop house or unheated greenhouse is the lift this needs. How a greenhouse changes what you can grow →
Zone math from 7-10 (plant) against 4-6 (Nebraska). Lift modeled by crop_engine.GREENHOUSE_ZONE_MODIFIER_BY_SUBTYPE['hoop_house'] (+1.5 zones) via api/fast_sections.py Unlock Engine v2.
Gladiolus Communis in Nebraska — the short answer
Gladiolus Communis in Nebraska: hardy in zones 7–10, full sun, against a state median of ~181 frost-free days.
- Plant zones
- 7-10
- 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 gladiolus communis against your parcel's actual hardiness, soil, and sun.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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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 gladiolus communis 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 Gladiolus Communis Stands in Nebraska
Gladiolus Communis is rated for zones 7–10 — a cold floor USDA puts at 0 to 10°F. No Nebraska county sits inside it, so in open ground this is a grown-under-cover plant here rather than a bed plant — which is a statement about Nebraska winters, not about gladiolus communis.
Below the zone 7 floor
93 counties
- Sioux County · zone 4b
- Antelope County · zone 5a
- Arthur County · zone 5a
3 of 93 shown
Winter cold is the limit here — the same plant works in a container that comes under cover.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. A zone is a 10°F band of average annual extreme minimum temperature, so the floor above is the band the plant's rating denotes, not a single measured kill point. Slope, shelter and cold-air drainage routinely move a site half a zone either way from its county figure — which is the part only your address resolves.
Zone Comparison
Gladiolus Communis Needs
- USDA Zones: 7-10
- Sun: Full Sun
- Mature size: 4 ft tall
- Picking window: ~30 days of harvest
- 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 7-10)
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 Gladiolus Communis 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 gladiolus communis, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether gladiolus communis 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.
Timing tuned to sub-state frost dates — Sioux 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.
Soil + Drainage Fit
Gladiolus Communis likes near-neutral soil (pH 6-7). That's the common-ground band across Nebraska's loess and sandy loam (sandhills) — a soil test confirms it for your site. It will grow across that whole span, but it does best between pH 6.5 and 7 — 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.
Your land, not the state average
SSURGO maps about 8.3% of Nebraska as poorly or somewhat-poorly drained, and the class flips parcel to parcel. Gladiolus Communis has low drought tolerance, so it is the fast-draining end that will cost you — your soil map unit, not the state average, is the real answer.
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. 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 Gladiolus Communis 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
Growing gladiolus communis here specifically
Gladiolus Communis wilts without steady moisture and rates to zones 7–10; roughly 20.7% of Nebraska sits on sandy, excessively-drained ground (SSURGO) that sheds water almost as fast as it falls.
Hold moisture for gladiolus communis with deep mulch and drip lines, especially on the droughtiest parcels. How to handle it →
What to actually do about these — and the constraints that apply to every Nebraska grower, not just gladiolus communis — is covered on the Nebraska growing guide.
Timing shifts within Nebraska
Nebraska isn't one climate. In Sioux County, the last hard freeze (28°F) holds until about May 14 — roughly 25 days later than the recorded state median — so plant gladiolus communis to your county's window, not the statewide date.
County last-freeze dates: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F freeze (earlier than the folk 32°F "last frost"). A parcel report resolves your address's own frost dates.
Where in Nebraska Gladiolus Communis Is Zone-Hardy
Gladiolus Communis is rated for USDA zones 7–10. No Nebraska county reaches it. Even Thayer County, the state’s mildest winter at zone 6a, sits below the plant’s zone 7 floor — so in open ground this one needs winter protection here, or a container that comes under cover.
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. None of that range reaches the band gladiolus communis needs, so here the statewide answer really is the answer.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. Gladiolus Communis’s zone 7–10 band: USDA PLANTS / Growable Ground plant database. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
Pollinator + Wildlife Value
Gladiolus Communis draws honeybees, native bees, and butterflies (moderate value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, gladiolus communis 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.
Recommended Gladiolus Communis Varieties for Nebraska
Nebraska publishes no state variety trial for gladiolus communis, so we won't invent a "best for Nebraska" list. Choose types rated to your USDA hardiness zone (4b-6a), and confirm winter survival and drainage against your own parcel.
Nebraska Cooperative Extension
For Nebraska-specific cultivar recommendations, planting calendars, and pest pressure for gladiolus communis, the canonical source is Nebraska Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Gladiolus Communis native to Nebraska?
No — the USDA PLANTS Database lists Gladiolus Communis 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 Gladiolus Communis in Nebraska
When can I plant Gladiolus Communis 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 Gladiolus Communis, 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 Gladiolus Communis grown in across Nebraska?
Nebraska spans USDA hardiness zones 4b-6a (USDA ARS PHZM 2023). Gladiolus Communis carries a range of zones 7-10, 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). Gladiolus Communis 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. In cooler counties like Sioux, the freeze-free season runs shorter than the state average, so verify your own county's window.
Is Gladiolus Communis native to Nebraska?
No — the USDA PLANTS Database lists Gladiolus Communis 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 Gladiolus Communis in Nebraska?
Gladiolus Communis prefers pH 6-7 and well (dry spells) drainage (Growable Ground Plant Database). 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 Gladiolus Communis actually grow on my specific land in Nebraska?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores gladiolus communis 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 gladiolus communis against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Nebraska gladiolus communis 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 gladiolus communis average
Explore More
Growing guides for gladiolus communis
Explore Nebraska county by county
Nebraska carries 93 counties with their own USDA zone — a sample of the growing pages for gladiolus communis there:
Where else gladiolus communis grows
Gladiolus Communis's zone band crosses state lines — these are the states closest to Nebraska in winter climate where it also has a page, plus the far ends of its range. Each one re-answers the question with that state's own record.
More to grow in Nebraska
Nebraska has a growing page for 806 plants — a rotating sample of the rest of the shelf.
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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