Richlandtown, Pennsylvania, sits in USDA hardiness zone 7a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Among the crops suited to this profile: cabbage, hazelnut, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Richlandtown, 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 Richlandtown 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 Richlandtown — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Richlandtown — the short answer
Richlandtown, Pennsylvania: USDA zone 7a, about 211 days between hard freezes, across 166 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~211
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 166 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 Richlandtown's average, not your lot's — a low corner or a tree line moves it. Against Richlandtown's 211-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Richlandtown
Each reading below is measured for Richlandtown itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRichlandtown runs about 211 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
MeasuredRichlandtown 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 Richlandtown is in
Richlandtown sits in the Northern Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Richlandtown's own centroid rather than borrowed from Bucks County.
What Grows in Richlandtown
Every plant below cleared Richlandtown's own zone 7a and its 211-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Richlandtown?
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 8; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 5 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 2 — 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 Richlandtown
Spotted lanternfly documented 2 miles from Richlandtown, first recorded 2016. What to watch for.
What's on the federal record near Richlandtown
Closest first, within ~10 miles of Richlandtown. Listing isn't leaking, and distance isn't exposure.
- M & M SVC CTRUnderground Storage Tanks · 950 ft
- L KENNETH HINKLEUnderground Storage Tanks · 1700 ft
- FLOYD BLESS EXCAVATINGUnderground Storage Tanks · 0.6 mi
- BOBS GARAGEUnderground Storage Tanks · 0.7 mi
- OLDCASTLE LAWN & GARDEN/QUAKERTOWNToxics Release Inventory · 1.0 mi
- OLDCASTLE LAWN & GARDENUnderground Storage Tanks · 1.0 mi
- WATSON JOHNSON LANDFILLSuperfund · 1.0 mi
- BK 54Nitrate · 1.2 mi
- LUSTIGS MEATSUnderground Storage Tanks · 1.3 mi
- MILFORD TWP WATER AUTHORITYPFAS · 1.7 mi
- QUAKERTOWN BOROPFAS · 1.7 mi
- RICHLAND TWP WATER AUTHORITYPFAS · 1.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Richlandtown'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 Richlandtown.
Sources Checked
within ~10 miles of Richlandtown
Severity Distribution
within ~10 miles of Richlandtown
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Richlandtown, two things run higher than the national average within ~10 miles of Richlandtown — PFAS (8 sites) and Superfund (11 sites). That's not a problem with your land — it's information about it.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Richlandtown
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 Richlandtown average
Your land is one point inside Richlandtown
Everything above resolves to Richlandtown as a whole — one PHZM band and one 28°F frost record, read across 166 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 Richlandtown Average
Richlandtown Average
- ●USDA Zones 7a, averaged across Richlandtown
- ●One soil character for all of Richlandtown
- ●Frost dates read at Richlandtown's scale: Apr 5 to Nov 2
YOUR Parcel
- ✓Your exact zone, not Richlandtown's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Richlandtown
Pull a site-specific report for your exact address in Richlandtown, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Richlandtown averages can't show:
We read public map data around Richlandtown — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Richlandtown average
How we know this about Richlandtown
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 Richlandtown’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 Richlandtown
When does frost risk typically end in Richlandtown?
The last hard freeze (28°F) in Richlandtown typically lands around Apr 5, 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 26.
When is the first frost in Richlandtown?
The first hard freeze (28°F) in Richlandtown typically arrives around Nov 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 19, so the watching starts about Oct 3 — about 211 days after the spring freeze cleared.
How long is the growing season in Richlandtown?
Measured between 28°F hard freezes, Richlandtown sees about 211 frost-free days — roughly Apr 5 through Nov 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 26 to Oct 19, about 176 days.
Is the soil safe to grow vegetables in Richlandtown?
The federal record around Richlandtown runs heavier than most — 855 documented sites, mostly Underground Storage Tanks entries (368), the nearest Underground Storage Tanks record about 0.2 miles out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Richlandtown?
From about Oct 3 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 2 (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 2. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Richlandtown's scale — its 7a band and its 211-day season. Your yard writes its own version of Richlandtown'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 Richlandtown’s own scale
7 of the readings below were taken at Richlandtown's own scale — its own ~211-day season between 28°F freezes, the 166 acres it covers and 855 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Richlandtown's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Richlandtown's own 28°F hard-freeze dates, about Apr 5 and Nov 2 and the ~211-day span between themNOAA 1991–2020 Climate Normals
- 855 documented contamination sites on the federal record near Richlandtown, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Richlandtown's boundary and the 166 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~211-day seasonGrowable Ground crop-matching engine
- The ecoregion at Richlandtown's own centroid, the Northern PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Richlandtownlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Richlandtown's 166 acres read through its county's SSURGO summaryfrom Bucks County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Bucks 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 Bucks County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Richlandtown's 166 acreswhy one lot differs from the next →
- Which side of Richlandtown you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 166 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Richlandtown-wide figureread your own land →
More in Pennsylvania
Wider growing context
What grows across PennsylvaniaRichlandtown sits outside our named growing regions, so Pennsylvania as a whole is its closest context here.
Nearby growing guides