Yes — Strong Match
blue vervain (zones 3-8) covers every zone Nebraska contains (4b-6a), so hardiness is not what limits it anywhere in the state.
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 blue vervain against your parcel's actual hardiness, soil, and sun.
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Zone Comparison
Blue Vervain Needs
- USDA Zones: 3-8
- Mature size: 5 ft tall
- Picking window: ~45 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 3-8)
Plant data: USDA PLANTS Database / Growable Ground plant catalog. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Blue Vervain 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 blue vervain, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether blue vervain 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: USDA PLANTS Database. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Blue Vervain in Nebraska — Quick Answer
- Verdict: Yes — Strong Match
- Plant Zones: 3-8 (USDA PLANTS Database)
- State Zones: 4b-6a (USDA ARS PHZM 2023)
- Growing Season: 28°F hard freezes about Apr 12 - Apr 26 to Oct 15 - Oct 21 (NOAA Regional Climate Centers ACIS, 1991-2020)
What Else to Consider for Blue Vervain 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 blue vervain — is covered on the Nebraska growing guide.
Where in Nebraska Blue Vervain Is Zone-Hardy
Blue Vervain is rated for USDA zones 3–8. 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 blue vervain 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". Blue Vervain’s zone 3–8 band: USDA PLANTS / Growable Ground plant database. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
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 blue vervain (USDA PHZM 2023):
Pollinator + Wildlife Value
Blue Vervain draws honeybees, native bees, butterflies, and hummingbirds (high value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, blue vervain 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 blue vervain, the canonical source is Nebraska Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Blue Vervain native to Nebraska?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Blue Vervain as native to Nebraska. Planting it supports the pollinators and wildlife that evolved alongside it.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Blue Vervain in Nebraska
When can I plant Blue Vervain 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 Blue Vervain, 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 Blue Vervain grown in across Nebraska?
Nebraska spans USDA hardiness zones 4b-6a (USDA ARS PHZM 2023). Blue Vervain carries a range of zones 3-8, 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). Blue Vervain 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 Blue Vervain native to Nebraska?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Blue Vervain as native to Nebraska. Planting it supports the pollinators and wildlife that evolved alongside it.
Will Blue Vervain actually grow on my specific land in Nebraska?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores blue vervain 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 blue vervain against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Nebraska blue vervain averages can't show:
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Growing guides for blue vervain
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