Ocean Bluff-Brant Rock, Massachusetts, sits in USDA hardiness zones 5a-6b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Reliable performers under these conditions include tomato, blueberry, sugar maple, and zucchini; what your own ground favors still comes down to its soil, sun, and drainage.
You’re in South Shore
The coastal band south of Boston into old cranberry country — sandy, acidic ground and a maritime season that runs a touch longer than the interior. Bog and shoreline shape what has always grown well down here.
Even in Ocean Bluff-Brant Rock, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Ocean Bluff-Brant Rock lot. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Quick Facts
USDA Zones
5a-6b
Last Hard Freeze (28°F)
Mar 27
Town normal — light frosts run a few weeks later
First Hard Freeze (28°F)
Dec 1
Town normal — light frosts arrive a few weeks earlier
Town Area
1K acres
Hardiness Zone Range
Zone maps are averages across Ocean Bluff-Brant Rock. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil varies lot by lot — soil types explained.
What Grows in Ocean Bluff-Brant Rock
Plants matched to Ocean Bluff-Brant Rock's USDA zones 5a-6b — each links to its full growing profile.











Is it too late to plant in Ocean Bluff-Brant Rock?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 27 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 1 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.

Growing Challenges in Massachusetts
What an experienced grower plans around here — each one has a move.

Short growing season (120-180 frost-free days) limits warm-season crops
Pick fast-maturing varieties and start warm-season crops indoors — a cold frame or low tunnel reliably adds weeks on either end.

Rocky glacial soils require amendment in many areas
A raised bed with imported soil skips the rock-picking entirely and starts your first season on your terms.

Late spring frosts can damage early plantings through mid-May
Trust your local last-frost window over the calendar — hardy greens can go out weeks early while tender transplants wait it out.

Deer pressure is significant in suburban and rural areas
An 8-foot fence — or a slanted double line — is the fix that actually holds; lean the unfenced edges toward deer-resistant herbs, ferns, and bulbs.
For cultivar selection, pest pressure, and planting-time guidance specific to Massachusetts, the UMass Extension is the authoritative local source.
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Total Sites
538
within ~10 miles of Ocean Bluff-Brant Rock
Risk Level
Elevated
Highest-severity
1 Superfund site
Sources Checked
within ~10 miles of Ocean Bluff-Brant Rock
Severity Distribution
within ~10 miles of Ocean Bluff-Brant Rock
Highest-Severity Sites

A note from Gnorman
What an experienced grower watches for around here
In and around Ocean Bluff-Brant Rock, two things run higher than the national average — PFAS (7 sites) and Brownfields (311 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Ocean Bluff-Brant Rock
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Your Specific Parcel Matters
Ocean Bluff-Brant Rock Average
- ●USDA Zones 5a-6b
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Ocean Bluff-Brant Rock
Pull a site-specific report for your exact address in Ocean Bluff-Brant Rock, Massachusetts — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Key Growing Facts for Ocean Bluff-Brant Rock, Massachusetts
- USDA Hardiness Zones: 5a-6b (USDA PHZM 2023)
- Last Hard Freeze (28°F): Mar 27 (town normal, NOAA 1991–2020 Climate Normals — light frosts can follow for a few weeks)
- First Hard Freeze (28°F): Dec 1 (town normal, NOAA 1991–2020 Climate Normals — light frosts can arrive a few weeks earlier)
- Days Between Hard Freezes: ~249 (town normal, NOAA 1991–2020 Climate Normals)
- Land Area: 1K acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. Boundaries: US Census TIGER/Line 2025.
Frequently Asked Questions
What hardiness zone is Ocean Bluff-Brant Rock, Massachusetts?
Ocean Bluff-Brant Rock sits in USDA hardiness zones 5a-6b, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
Is it too late to plant in Ocean Bluff-Brant Rock?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 27 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 1 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
When does frost risk typically end in Ocean Bluff-Brant Rock?
The last hard freeze (28°F) in Ocean Bluff-Brant Rock typically lands around Mar 27, per NOAA 1991–2020 climate normals — an earlier marker than the light-frost dates many planting charts quote. That marks the hard freeze, not the last light frost — light frosts can still bite for a few more weeks, so tender transplants usually wait another 2–3 weeks.
When is the first frost in Ocean Bluff-Brant Rock?
The first hard freeze (28°F) in Ocean Bluff-Brant Rock typically arrives around Dec 1, per NOAA 1991–2020 climate normals — the point most tender summer crops finish. Lighter frosts usually reach a couple of weeks earlier, so watch the forecast from late summer on and harvest or cover tender plants before the first cold night.
What vegetables grow in Ocean Bluff-Brant Rock?
Ocean Bluff-Brant Rock's zones 5a-6b support a wide range — strong performers include Tomato, Blueberry, Sugar Maple, Zucchini, and Kale. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Which hardiness zone is Ocean Bluff-Brant Rock, really?
Officially, Ocean Bluff-Brant Rock sits in USDA zones 5a-6b (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
Is the soil safe to grow vegetables in Ocean Bluff-Brant Rock?
The federal record around Ocean Bluff-Brant Rock is a meaningful one — 538 documented sites — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Ocean Bluff-Brant Rock?
As the season closes around the first 28°F hard freeze near Dec 1 (NOAA 1991–2020 climate normals), a few moves buy time: cover tender plants with floating row cover or an old sheet on still, clear nights, water the soil the afternoon before a freeze so it holds warmth overnight, and harvest frost-tender crops like tomatoes, peppers, and basil before the first hard night. Hardy greens and root crops shrug off light frost and often sweeten after it, so leave them in.
Everything on this page is a Ocean Bluff-Brant Rock average. Your yard writes its own version — we read soil, sun, drainage, and frost at your exact address. Try it for 14 days — no card required.
