Yes — Strong Match
American plum (zones 3-8) covers every zone Massachusetts contains (5a-7b), so hardiness is not what limits it anywhere in the state.
American Plum in Massachusetts — the short answer
American Plum in Massachusetts: hardy in zones 3–8, full sun.
- Plant zones
- 3-8
- Rated hardy to zone 3a by NC State Extension Gardener Plant Toolbox, checked Oct 2026. Ceiling: not verified.
- 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
- To first harvest
- ~4 years
- Growable Ground Plant Database
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 american plum 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 parcel report in seconds — read in full free for your first 14 days
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 american plum 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 american plum (USDA PHZM 2023):
Zone Comparison
American Plum Needs
- USDA Zones: 3-8
- Sun: Full Sun
- Mature size: 15 ft tallWe haven't confirmed this against a published source yet.
- Picking window: ~21 days of harvestWe haven't confirmed this against a published source yet.
- Drought tolerance: MediumWe haven't confirmed this against a published source yet.
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 3-8)
Preferred Soil pH
We haven't confirmed this against a published source yet.
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 American Plum 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 american plum, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether american plum 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 american plum survives winter here. Whether the season is long enough — and warm enough — is a different question.
Growing degree days
American Plum needs ~2000 GDD (base 50°F) to ripen. We haven't confirmed this against a published source yet. The state median runs ~2506 GDD (from PRISM 1991-2020 climate normals), so Massachusetts's typical season clears that easily.
Chill hours
American Plum 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
American Plum tolerates a wide pH range (pH 4.5-7.5) — 3 units, acid ground through alkaline — so soil acidity is rarely what limits it in Massachusetts. A soil test is still worth having, but for what else it tells you about this site, not to clear this plant. It will grow across that whole span, but it does best between pH 5.5 and 6.3 — worth knowing before you decide whether a Massachusetts soil test result is a problem or just a number. Drainage matters: this plant wants well (dry spells). If your Massachusetts site is heavier clay or sits in a low spot, a raised bed lifts the roots above wet ground, or work in compost. pH range, preferred pH and drainage need: We haven't confirmed this against a published source yet.
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. American Plum needs about 59 inches of workable depth, so it is that horizon — not the surface — you are testing for. That map unit, not the state average, decides how american plum 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.
Before you plant american plum for food
Anything you grow to eat takes up what is in the ground it grows in, so what is on record near you is worth knowing before american plum goes in. What follows is Massachusetts’s documented federal record at state scale — a screening signal, not a soil test, and not a statement about any one lot.
Safe to Grow Here?
What the federal record shows across Massachusetts — and how to grow with it.
We checked the federal record across Massachusetts — 14,180 documented sites across 7 of the 8 source types we track.
The most significant on record: 417 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Massachusetts carries one of the heavier federal records we track — and that's not a verdict on your yard. Proximity to a documented site is information, not a diagnosis: nothing here says any particular parcel is affected. It does earn one concrete step — before food beds go in the ground, a professional soil test tells you exactly what you're working with, and raised beds of imported, lab-tested soil grow well almost anywhere in the meantime.
Sources Checked
across Massachusetts
Severity Distribution
across Massachusetts
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Massachusetts, two things run higher than the national average across Massachusetts — Superfund (417 sites) and Brownfields (1,141 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Brownfields: Brownfield sites are former commercial or industrial properties that EPA’s Brownfields program (ACRES) has assessed or funded cleanup on.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Contact the EPA Brownfields program or the state cleanup agency for this site’s actual assessment/remediation status — ACRES itself does not publish one we can read per site.
Sources: EPA, USGS — 950K documented sites tracked nationwide across 8 federal source types.
What Else to Consider for American Plum 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 american plum here specifically
American Plum takes ~1460 days and rates to zones 3–8; against Massachusetts's ~206 frost-free days, timing is everything.
Buy american plum weeks with an early indoor sowing and season-extending covers. How to handle it →
What to actually do about these — and the constraints that apply to every Massachusetts grower, not just american plum — 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 american plum 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 Massachusetts American Plum Is Zone-Hardy
American Plum is rated for USDA zones 3–8. Every one of Massachusetts’s 14 counties sits inside that band — from Berkshire County at zone 5b to Nantucket County at zone 7b — 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 14 counties Massachusetts’s winter-low ladder runs from zone 5b in Berkshire County to zone 7b in Nantucket County — 2 USDA zones of spread, which is 20°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. Berkshire County holds its last hard freeze (28°F) until about Apr 29, while Nantucket County is clear by Mar 26 — 34 days apart. Set american plum 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". American Plum’s zone 3–8 band: Rated hardy to zone 3a by NC State Extension Gardener Plant Toolbox, checked Oct 2026. Ceiling: not verified.. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
Pollinator + Wildlife Value
American Plum draws honeybees, native bees, and butterflies (high value). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, american plum 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. Pollinator value: We haven't confirmed this against a published source yet.
Good to Know Before You Plant American Plum
American Plum is listed as toxic to dogs, cats, horses (seeds, leaves, bark) at a moderate level. (Source: NC State Extension Gardener Plant Toolbox; U.S. FDA Center for Veterinary Medicine, which lists the genus Prunus, not this species by name, as potentially dangerous to pets.) Most listed plants only cause brief upset — a raised bed or a fenced corner usually keeps curious pets clear.
Massachusetts Cooperative Extension
For Massachusetts-specific cultivar recommendations, planting calendars, and pest pressure for american plum, the canonical source is UMass Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is American Plum native to Massachusetts?
The USDA PLANTS Database (accessed 2026-10-19) lists American Plum as native to the Lower 48 and records it growing in Massachusetts, but it does not say whether those Massachusetts plants are native or introduced. Your state's native plant society or Cooperative Extension can tell you whether it is part of the local flora.
State records: USDA PLANTS Database state-distribution data (presence, not state-level nativity), accessed 2026-10-19.
What pests threaten american plum in Massachusetts?
Japanese beetle is documented in Massachusetts and will find american plum, but it is manageable here. What an experienced grower watches for, and does:
Japanese beetle
Worth watchingJapanese beetles feed readily on Prunus fruit and nut trees — the University of Kentucky lists cherries, plums, peaches and their relatives among the plants likely to be attacked. The University of Minnesota's read keeps it in proportion: fruits and their trees tolerate limited leaf feeding, and in most cases the damage is cosmetic rather than a threat to the harvest.
What to do: Protect it through the few peak weeks of midsummer, not all season. Handpick beetles into soapy water in the cool of morning, harvest regularly through July and August to take feeding pressure off the fruit, and keep the tree well watered. Do not hang a Japanese beetle trap — the lures draw in more beetles than they remove.
Documented range: states listed as Japanese-beetle infested · University of Kentucky Entomology, University of Minnesota Extension, National Plant Board
Only pests whose documented range and host relationship both trace to a primary source appear here — so a quiet section means we have nothing sourced to tell you, not that your garden is pest-free.
Common Questions About Growing American Plum in Massachusetts
When can I plant American Plum 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 American Plum, 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 American Plum grown in across Massachusetts?
Massachusetts spans USDA hardiness zones 5a-7b (USDA ARS PHZM 2023). American Plum 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 Massachusetts site have?
A typical Massachusetts site sees ~206 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). American Plum needs 240+ 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 American Plum native to Massachusetts?
The USDA PLANTS Database (accessed 2026-10-19) lists American Plum as native to the Lower 48 and records it growing in Massachusetts, but it does not say whether those Massachusetts plants are native or introduced. Your state's native plant society or Cooperative Extension can tell you whether it is part of the local flora.
How should I amend the soil for American Plum in Massachusetts?
American Plum tolerates pH 4.5-7.5 and well (dry spells) drainage. We haven't confirmed this against a published source yet. That is a 3-unit span, acid ground through alkaline, so pH is rarely what limits this plant on a Massachusetts site — amend for drainage and organic matter first.
Will American Plum actually grow on my specific land in Massachusetts?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores american plum against your address's mapped 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 american plum against your land's mapped soil, modelled sun, drainage, and frost data — not zone averages.
Three things about your lot that Massachusetts american plum 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 american plum average
Explore More
Growing guides for american plum
Explore Massachusetts county by county
Massachusetts carries 14 counties with their own USDA zone — a sample of the growing pages for american plum there:
Where else american plum grows
American Plum's zone band crosses state lines — these are the states closest to Massachusetts 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 Massachusetts
Massachusetts has a growing page for 889 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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