Trumbull Center, Connecticut, sits in USDA hardiness zone 7a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Well-matched crops include cabbage, hazelnut, california poppy, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Trumbull Center, 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 Trumbull Center lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Trumbull Center — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Trumbull Center — the short answer
Trumbull Center, Connecticut: USDA zone 7a, about 223 days between hard freezes, across 4K acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~223
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 4K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 7a is Trumbull Center's average, not your lot's — a low corner or a tree line moves it. Against Trumbull Center's 223-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Trumbull Center
Each reading below is measured for Trumbull Center itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredTrumbull Center runs about 223 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredTrumbull Center sits in USDA hardiness zone 7a.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Trumbull Center is in
Trumbull Center sits in the Northeastern Coastal Zone — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Trumbull Center's own centroid rather than borrowed from Greater Bridgeport Planning Region.
What Grows in Trumbull Center
Every plant below cleared Trumbull Center's own zone 7a and its 223-day season. Each card opens that plant's Connecticut profile. How we score.
Is it too late to plant in Trumbull Center?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 11 — 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.
Documented around Trumbull Center
Spotted lanternfly documented 1 miles from Trumbull Center, first recorded 2021. What to watch for.
What's on the federal record near Trumbull Center
Closest first, within ~10 miles of Trumbull Center. Listing isn't leaking, and distance isn't exposure.
- CT-TR 21Nitrate · 1300 ft
- TRUMBULL FOOD MART LLC UST SITE ID#144-7755Brownfields · 1400 ft
- BOARD OF EDUCATION GARAGEUnderground Storage Tanks · 0.5 mi
- MOBIL OIL CORP SERV STA LG2Brownfields · 0.7 mi
- MOBIL S/S# 01-LG2Underground Storage Tanks · 0.8 mi
- TOWN OF TRUMBULLBrownfields · 0.9 mi
- HELICOPTER SUPPORT INCBrownfields · 0.9 mi
- AVERY ABRASIVES, INCToxics Release Inventory · 1.0 mi
- NEW ENGLAND MECHANICAL SERVICES INCBrownfields · 1.0 mi
- CLEAN HARBORSBrownfields · 1.2 mi
- 106 BEARDSLEY PARKUnderground Storage Tanks · 1.2 mi
- CT DOTBrownfields · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Trumbull Center's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Trumbull Center.
Total Sites
1,997
within ~10 miles of Trumbull Center
Risk Level
Elevated
Highest-severity
33 Superfund sites
Sources Checked
within ~10 miles of Trumbull Center
Severity Distribution
within ~10 miles of Trumbull Center
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Trumbull Center, two things run higher than the national average within ~10 miles of Trumbull Center — Superfund (33 sites) and Toxics Release Inventory (145 sites). That's not a problem with your land — it's information about it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Trumbull Center
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Trumbull Center average
Your land is one point inside Trumbull Center
Everything above resolves to Trumbull Center as a whole — one PHZM band and one 28°F frost record, read across 4K acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at town scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Trumbull Center Average
Trumbull Center Average
- ●USDA Zones 7a, averaged across Trumbull Center
- ●One soil character for all of Trumbull Center
- ●Frost dates read at Trumbull Center's scale: Apr 2 to Nov 11
YOUR Parcel
- ✓Your exact zone, not Trumbull Center's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Trumbull Center
Pull a site-specific report for your exact address in Trumbull Center, Connecticut — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Trumbull Center averages can't show:
We read public map data around Trumbull Center — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Trumbull Center average
How we know this about Trumbull Center
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Trumbull Center’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at town grain anywhere on this page — there is no town-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Trumbull Center
When does frost risk typically end in Trumbull Center?
The last hard freeze (28°F) in Trumbull Center typically lands around Apr 2, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about Apr 23.
When is the first frost in Trumbull Center?
The first hard freeze (28°F) in Trumbull Center typically arrives around Nov 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 28, so the watching starts about Oct 12 — about 223 days after the spring freeze cleared.
How long is the growing season in Trumbull Center?
Measured between 28°F hard freezes, Trumbull Center sees about 223 frost-free days — roughly Apr 2 through Nov 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 23 to Oct 28, about 188 days.
Is the soil safe to grow vegetables in Trumbull Center?
The federal record around Trumbull Center is a meaningful one — 1,997 documented sites, mostly Underground Storage Tanks entries (993), the nearest Nitrate record about 0.2 miles out — 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 Trumbull Center?
From about Oct 12 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Nov 11 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Nov 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Trumbull Center's scale — its 7a band and its 223-day season. Your yard writes its own version of Trumbull Center's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Trumbull Center’s own scale
7 of the readings below were taken at Trumbull Center's own scale — its own ~223-day season between 28°F freezes, the 3,650 acres it covers and 1,997 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Trumbull Center's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Trumbull Center's own 28°F hard-freeze dates, about Apr 2 and Nov 11 and the ~223-day span between themNOAA 1991–2020 Climate Normals
- 1,997 documented contamination sites on the federal record near Trumbull Center, the closest Nitrate record about 0.2 miles out from the town centreFederal environmental registers
- Trumbull Center's boundary and the 3,650 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~223-day seasonGrowable Ground crop-matching engine
- The ecoregion at Trumbull Center's own centroid, the Northeastern Coastal ZoneUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Trumbull Centerlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Trumbull Center's 3,650 acres read through its county's SSURGO summaryfrom Greater Bridgeport County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Greater Bridgeport County
- The growing challenges every Connecticut grower plans around — written at state scale, so they stay on the state guidefrom Connecticut
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Greater Bridgeport County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Trumbull Center's 3,650 acreswhy one lot differs from the next →
- Which side of Trumbull Center you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,650 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 0.2 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Trumbull Center-wide figureread your own land →
More in Connecticut
Wider growing context
What grows across ConnecticutTrumbull Center sits outside our named growing regions, so Connecticut as a whole is its closest context here.
Nearby growing guides