Yes — Strong Match
redbud (zones 5-11) covers every zone Massachusetts contains (5a-7b), so hardiness is not what limits it anywhere in the state.
Redbud in Massachusetts — the short answer
Redbud in Massachusetts: hardy in zones 5–11, shade, against a state median of ~206 frost-free days.
- Plant zones
- 5-11
- 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
- Massachusetts zones
- 5a-7b
- USDA PHZM 2023
- Frost window
- Apr 4 - Apr 14 – Oct 24 - Nov 14
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 171 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.
Massachusetts spans zones 5a-7b, 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 redbud 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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Massachusetts is not one climate
Massachusetts’s winter-low ladder runs across 14 counties, from zone 5.5 in Berkshire County to zone 7.5 in Nantucket County. That is 20°F between the two counties’ average coldest night — the difference between redbud overwintering in the ground and coming under cover.
The middle half of 14 counties runs 6–7 zones, with a median of 6.5 zones — a 2-zone span end to end.
Measured across 14 Massachusetts 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 Massachusetts Fits Best
Even within Massachusetts's zones 5a-7b, county microclimates differ enough to change what thrives. These counties carry the closest zone match for redbud (USDA PHZM 2023):
Zone Comparison
Redbud Needs
- USDA Zones: 5-11
- Frost-Free Days: 170+
- Sun: Shade
- Mature size: 25 ft tall
- Drought tolerance: High
Massachusetts Has
- USDA Zones: 5a-7b
- Last Hard Freeze (28°F): Apr 4 - Apr 14
- First Hard Freeze (28°F): Oct 24 - Nov 14
- Annual Rainfall: 42-50 inches
- Common Soils: Glacial till, Sandy loam, Rocky loam
Plant Zone Range (zones 5-11)
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 Redbud in Massachusetts
The frost window
Across Massachusetts, the last spring hard freeze (28°F) clears between Apr 4 and Apr 14, and the first fall hard freeze lands between Oct 24 and Nov 14 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 193-day window you can count on — up to 224 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
Massachusetts runs as cold as USDA zone 5, and no sourced winter-hardiness floor is on record for redbud, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether redbud is a permanent planting or a replant-every-spring crop for you turns on your own zone within Massachusetts; check its hardiness range against that before treating it as long-lived ground.
Timing tuned to sub-state frost dates — Berkshire 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.
Growing Season Fit
The zone check says redbud survives winter here. Whether the season is long enough — and warm enough — is a different question.
Frost-free days
Redbud wants 170+ frost-free days; a typical Massachusetts site sees ~206 (NOAA Regional Climate Centers ACIS, 1991-2020). That leaves a workable window — start indoors to bank time.
Chill hours
Redbud requires ~800 chill hours (32-45°F dormancy window). Massachusetts 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
Redbud likes near-neutral soil (pH 5-7.9). That's the common-ground band across Massachusetts's glacial till and sandy loam — a soil test confirms it for your site.
Your land, not the state average
Massachusetts's soils run mostly fine sandy loam, but SSURGO maps the series, texture, and drainage under your exact parcel. What matters for redbud is the horizon its roots actually work, not the surface. That map unit, not the state average, decides how redbud performs.
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. Massachusetts soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
What Else to Consider for Redbud in Massachusetts
Zone compatibility tells you about winter cold survival — but Massachusetts growers also need to think about:
Short growing season (120-180 frost-free days) limits warm-season crops
Rocky glacial soils require amendment in many areas
Late spring frosts can damage early plantings through mid-May
Deer pressure is significant in suburban and rural areas
Growing redbud here specifically
Redbud needs pH 5.0–7.9; Massachusetts's dominant fine sandy loam soils may or may not deliver that, so your parcel's SSURGO map unit is the real test.
Start with a soil test on your own ground and adjust pH and texture to fit redbud's 5.0–7.9 range. How to handle it →
What to actually do about these — and the constraints that apply to every Massachusetts grower, not just redbud — is covered on the Massachusetts growing guide.
Timing shifts within Massachusetts
Massachusetts isn't one climate. In Berkshire County, the last hard freeze (28°F) holds until about Apr 29 — roughly 19 days later than the recorded state median — so plant redbud to your county's window, not the statewide date.
Redbud needs about 170 days of frost-free season to complete its cycle. Even Berkshire County — Massachusetts’s shortest season at 171 frost-free days — clears that by 1 days, so season length isn’t the constraint anywhere in Massachusetts. What varies is your own parcel.
Across Massachusetts’s 14 counties the frost-free season runs from 171 days in Berkshire County to 246 days in Nantucket County — a spread of 75 days, which is why a single statewide planting date misleads. The median Massachusetts county sees 206 frost-free days, leaving redbud about 36 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"). Redbud's 170-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
Redbud draws honeybees and native bees (high value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, redbud can only work that bloom inside Massachusetts's frost window — roughly 206 days, opening after the last 28°F freeze (Apr 4 - Apr 14) and closing at the first (Oct 24 - Nov 14), per NOAA Regional Climate Centers ACIS, 1991-2020.
Massachusetts Cooperative Extension
For Massachusetts-specific cultivar recommendations, planting calendars, and pest pressure for redbud, the canonical source is UMass Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Redbud native to Massachusetts?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Redbud as native to Massachusetts. 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 Redbud in Massachusetts
When can I plant Redbud in Massachusetts?
Massachusetts's last spring hard freeze (28°F) clears between Apr 4 and Apr 14, and the first fall hard freeze lands between Oct 24 and Nov 14 (NOAA Regional Climate Centers ACIS, 1991-2020). No sourced winter-hardiness floor is on record for Redbud, so this page does not state whether it overwinters in Massachusetts 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 Redbud grown in across Massachusetts?
Massachusetts spans USDA hardiness zones 5a-7b (USDA ARS PHZM 2023). Redbud carries a range of zones 5-11, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Massachusetts site have?
A typical Massachusetts site sees ~206 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Redbud needs 170+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date. In cooler counties like Berkshire, the freeze-free season runs shorter than the state average, so verify your own county's window.
Is Redbud native to Massachusetts?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Redbud as native to Massachusetts. Planting it supports the pollinators and wildlife that evolved alongside it.
How should I amend the soil for Redbud in Massachusetts?
Redbud prefers pH 5-7.9 (USDA PLANTS). That sits in the common-ground band across Massachusetts soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Redbud actually grow on my specific land in Massachusetts?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores redbud 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 Massachusetts
State-level data is a sketch. Your Growable Ground report scores redbud against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Massachusetts redbud averages can't show:
We read public map data around Massachusetts — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Massachusetts redbud average
Explore More
Growing guides for redbud
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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