Yes — Strong Match
smooth hydrangea (zones 3-9) 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 smooth hydrangea 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.
No card required · your full report in seconds
Zone Comparison
Smooth Hydrangea Needs
- USDA Zones: 3-9
- Frost-Free Days: 90+
- Sun: Part Sun
- Mature size: 5 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 3-9)
Preferred Soil pH
Plant data: USDA PLANTS Database / Growable Ground plant catalog. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Smooth Hydrangea 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 smooth hydrangea, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether smooth hydrangea 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.
Growing Season Fit
The zone check says smooth hydrangea survives winter here. Whether the season is long enough — and warm enough — is a different question.
Frost-free days
Smooth Hydrangea 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.
Chill hours
Smooth Hydrangea requires ~800 chill hours (32-45°F dormancy window). Nebraska typically banks ~2500 chill hours per winter (from PRISM 1991-2020 climate normals), which keeps this plant on track.
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
Smooth Hydrangea likes near-neutral soil (pH 5-7.5). 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 5.5 and 6.5 — 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 and drainage requirements from USDA PLANTS Database. Nebraska soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Smooth Hydrangea in Nebraska — Quick Answer
- Verdict: Yes — Strong Match
- Plant Zones: 3-9 (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 Smooth Hydrangea 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 smooth hydrangea — is covered on the Nebraska growing guide.
Timing shifts within Nebraska
Smooth Hydrangea 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 smooth hydrangea 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"). Smooth Hydrangea's 90-day requirement: USDA PLANTS / Growable Ground plant database (minimum frost-free days). A parcel report resolves your address's own frost dates.
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 smooth hydrangea (USDA PHZM 2023):
Pollinator + Wildlife Value
Smooth Hydrangea draws honeybees and native bees (moderate value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, smooth hydrangea 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 smooth hydrangea, the canonical source is Nebraska Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Smooth Hydrangea native to Nebraska?
Smooth Hydrangea 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 Smooth Hydrangea in Nebraska
When can I plant Smooth Hydrangea 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 Smooth Hydrangea, 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 Smooth Hydrangea grown in across Nebraska?
Nebraska spans USDA hardiness zones 4b-6a (USDA ARS PHZM 2023). Smooth Hydrangea 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 Nebraska site have?
A typical Nebraska site sees ~181 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Smooth Hydrangea 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 Smooth Hydrangea native to Nebraska?
Smooth Hydrangea 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 Smooth Hydrangea in Nebraska?
Smooth Hydrangea prefers pH 5-7.5 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 Smooth Hydrangea actually grow on my specific land in Nebraska?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores smooth hydrangea 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 smooth hydrangea against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Nebraska smooth hydrangea 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 smooth hydrangea average
Explore More
Growing guides for smooth hydrangea
Last updated: