Dilworthtown, Pennsylvania, sits in USDA hardiness zone 7a — a zone band wide enough that plant choice, not possibility, is the interesting question.
These conditions suit cabbage, hazelnut, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Dilworthtown, 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 Dilworthtown 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 Dilworthtown — soil, climate, flood, and parcel records. How we handle your address.
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Dilworthtown — the short answer
Dilworthtown, Pennsylvania: USDA zone 7a, about 218 days between hard freezes, across 406 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 7
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~218
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 406 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 Dilworthtown's average, not your lot's — a low corner or a tree line moves it. Against Dilworthtown's 218-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Dilworthtown
Each reading below is measured for Dilworthtown itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredDilworthtown runs about 218 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
MeasuredDilworthtown 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 Dilworthtown is in
Dilworthtown sits in the Northern Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Dilworthtown's own centroid rather than borrowed from Chester County.
What Grows in Dilworthtown
Every plant below cleared Dilworthtown's own zone 7a and its 218-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Dilworthtown?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Mar 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 7 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
Documented around Dilworthtown
Spotted lanternfly documented 2 miles from Dilworthtown, first recorded 2018. What to watch for.
What's on the federal record near Dilworthtown
Closest first, within ~10 miles of Dilworthtown. Listing isn't leaking, and distance isn't exposure.
- WEST CHESTER ACURAUnderground Storage Tanks · 1400 ft
- SIGNATURE USED CARSUnderground Storage Tanks · 1400 ft
- CAROUSEL HYUNDAI SUZUKIUnderground Storage Tanks · 1500 ft
- CAROUSEL TOYOTAUnderground Storage Tanks · 1600 ft
- DAMASKOS INCBrownfields · 1700 ft
- STILLMAN AUTO CTRUnderground Storage Tanks · 1900 ft
- LUKOIL 69721Underground Storage Tanks · 1900 ft
- SUNOCO 0714 0098Underground Storage Tanks · 2100 ft
- SUNOCO 0363 2841Underground Storage Tanks · 2200 ft
- GETTY 67436Underground Storage Tanks · 2300 ft
- OTTOS IMPORTED CARS LTDBrownfields · 2500 ft
- OTTOS IMPORTED CARS LTDUnderground Storage Tanks · 2500 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Dilworthtown'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 Dilworthtown.
Sources Checked
within ~10 miles of Dilworthtown
Severity Distribution
within ~10 miles of Dilworthtown
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Dilworthtown, Nitrate runs higher than the national average — 658 sites within ~10 miles of Dilworthtown. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Dilworthtown
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 Dilworthtown average
Your land is one point inside Dilworthtown
Everything above resolves to Dilworthtown as a whole — one PHZM band and one 28°F frost record, read across 406 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 Dilworthtown Average
Dilworthtown Average
- ●USDA Zones 7a, averaged across Dilworthtown
- ●One soil character for all of Dilworthtown
- ●Frost dates read at Dilworthtown's scale: Apr 3 to Nov 7
YOUR Parcel
- ✓Your exact zone, not Dilworthtown's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Dilworthtown
Pull a site-specific report for your exact address in Dilworthtown, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Dilworthtown averages can't show:
We read public map data around Dilworthtown — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Dilworthtown average
How we know this about Dilworthtown
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 Dilworthtown’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 Dilworthtown
When does frost risk typically end in Dilworthtown?
The last hard freeze (28°F) in Dilworthtown typically lands around Apr 3, 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 24.
When is the first frost in Dilworthtown?
The first hard freeze (28°F) in Dilworthtown typically arrives around Nov 7, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 24, so the watching starts about Oct 8 — about 218 days after the spring freeze cleared.
How long is the growing season in Dilworthtown?
Measured between 28°F hard freezes, Dilworthtown sees about 218 frost-free days — roughly Apr 3 through Nov 7, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 24 to Oct 24, about 183 days.
Is the soil safe to grow vegetables in Dilworthtown?
The federal record around Dilworthtown is a meaningful one — 2,217 documented sites, mostly Underground Storage Tanks entries (812), the nearest Underground Storage Tanks record about 0.3 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 Dilworthtown?
From about Oct 8 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 7 (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 7. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Dilworthtown's scale — its 7a band and its 218-day season. Your yard writes its own version of Dilworthtown'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 Dilworthtown’s own scale
7 of the readings below were taken at Dilworthtown's own scale — its own ~218-day season between 28°F freezes, the 406 acres it covers and 2,217 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Dilworthtown's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Dilworthtown's own 28°F hard-freeze dates, about Apr 3 and Nov 7 and the ~218-day span between themNOAA 1991–2020 Climate Normals
- 2,217 documented contamination sites on the federal record near Dilworthtown, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Dilworthtown's boundary and the 406 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~218-day seasonGrowable Ground crop-matching engine
- The ecoregion at Dilworthtown's own centroid, the Northern PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Dilworthtownlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Dilworthtown's 406 acres read through its county's SSURGO summaryfrom Chester County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Chester County
- The growing challenges every Pennsylvania grower plans around — written at state scale, so they stay on the state guidefrom Pennsylvania
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Chester County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Dilworthtown's 406 acreswhy one lot differs from the next →
- Which side of Dilworthtown you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 406 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Dilworthtown-wide figureread your own land →