Milford city, 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.
Expect cabbage, hazelnut, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Milford city, 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 Milford city 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 Milford city — soil, climate, flood, and parcel records. How we handle your address.
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Milford city — the short answer
Milford city, Connecticut: USDA zone 7a, about 238 days between hard freezes, across 14K acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~238
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 14K 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 Milford city's average, not your lot's — a low corner or a tree line moves it. Against Milford city's 238-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Milford city
Each reading below is measured for Milford city itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMilford city runs about 238 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
MeasuredMilford city 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 Milford city is in
Milford city sits in the Northeastern Coastal Zone — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Milford city's own centroid rather than borrowed from South Central Connecticut Planning Region.
What Grows in Milford city
Every plant below cleared Milford city's own zone 7a and its 238-day season. Each card opens that plant's Connecticut profile. How we score.
Is it too late to plant in Milford city?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 28; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 21 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Milford city
Spotted lanternfly documented 3 miles from Milford city, first recorded 2020. What to watch for.
What's on the federal record near Milford city
Closest first, within ~10 miles of Milford city. Listing isn't leaking, and distance isn't exposure.
- ACADEMY OF OUR LADY OF MERCY - LAURALTON HALLBrownfields · 950 ft
- CUMBERLAND FARMSBrownfields · 1300 ft
- METRO 135, LLCBrownfields · 1600 ft
- Arham Of Milford, LLCUnderground Storage Tanks · 1700 ft
- METRO 135 LLCBrownfields · 1700 ft
- CT-MI 315Nitrate · 1900 ft
- EXECUTIVE CLEANERSBrownfields · 2000 ft
- QUAMCO INC ELDORADO DIVBrownfields · 2000 ft
- QUAMCO INC ELDORADO DIVToxics Release Inventory · 2000 ft
- ESTATE OF SAM MASTROUnderground Storage Tanks · 2000 ft
- QUAMCO INC /ELDORADO DIVUnderground Storage Tanks · 2000 ft
- COLONIAL TOYOTA INCBrownfields · 2100 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Milford city'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 Milford city.
Total Sites
2,381
within ~10 miles of Milford city
Risk Level
Elevated
Highest-severity
33 Superfund sites
Sources Checked
within ~10 miles of Milford city
Severity Distribution
within ~10 miles of Milford city
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Milford city, two things run higher than the national average within ~10 miles of Milford city — Superfund (33 sites) and Toxics Release Inventory (163 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 Milford city
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 Milford city average
Your land is one point inside Milford city
Everything above resolves to Milford city as a whole — one PHZM band and one 28°F frost record, read across 14K 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 Milford city Average
Milford city Average
- ●USDA Zones 7a, averaged across Milford city
- ●One soil character for all of Milford city
- ●Frost dates read at Milford city's scale: Mar 28 to Nov 21
YOUR Parcel
- ✓Your exact zone, not Milford city's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Milford city
Pull a site-specific report for your exact address in Milford city, Connecticut — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Milford city averages can't show:
We read public map data around Milford city — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Milford city average
How we know this about Milford city
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 Milford city’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 Milford city
When does frost risk typically end in Milford city?
The last hard freeze (28°F) in Milford city typically lands around Mar 28, 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 18.
When is the first frost in Milford city?
The first hard freeze (28°F) in Milford city typically arrives around Nov 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 7, so the watching starts about Oct 22 — about 238 days after the spring freeze cleared.
How long is the growing season in Milford city?
Measured between 28°F hard freezes, Milford city sees about 238 frost-free days — roughly Mar 28 through Nov 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 18 to Nov 7, about 203 days.
Is the soil safe to grow vegetables in Milford city?
The federal record around Milford city is a meaningful one — 2,381 documented sites, mostly Underground Storage Tanks entries (1,295), the nearest Brownfields 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 Milford city?
From about Oct 22 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 21 (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 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Milford city's scale — its 7a band and its 238-day season. Your yard writes its own version of Milford city'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 Milford city’s own scale
7 of the readings below were taken at Milford city's own scale — its own ~238-day season between 28°F freezes, the 14,019 acres it covers and 2,381 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Milford city's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Milford city's own 28°F hard-freeze dates, about Mar 28 and Nov 21 and the ~238-day span between themNOAA 1991–2020 Climate Normals
- 2,381 documented contamination sites on the federal record near Milford city, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Milford city's boundary and the 14,019 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~238-day seasonGrowable Ground crop-matching engine
- The ecoregion at Milford city's own centroid, the Northeastern Coastal ZoneUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Milford citylydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Milford city's 14,019 acres read through its county's SSURGO summaryfrom South Central Connecticut County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom South Central Connecticut 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 South Central Connecticut County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Milford city's 14,019 acreswhy one lot differs from the next →
- Which side of Milford city you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 14,019 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Milford city-wide figureread your own land →
More in Connecticut
Wider growing context
What grows across ConnecticutMilford city sits outside our named growing regions, so Connecticut as a whole is its closest context here.
Nearby growing guides