Croydon, Pennsylvania, sits in USDA hardiness zone 7b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Expect cabbage, prickly pear, 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 Croydon, 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 Croydon 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 Croydon — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Croydon — the short answer
Croydon, Pennsylvania: USDA zone 7b, about 239 days between hard freezes, across 2K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 25
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 19
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~239
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 2K 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 7b is Croydon's average, not your lot's — a low corner or a tree line moves it. Against Croydon's 239-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Croydon
Each reading below is measured for Croydon itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCroydon runs about 239 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
MeasuredCroydon sits in USDA hardiness zone 7b.
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 Croydon is in
Croydon sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Croydon's own centroid, and it is not what its county reads: Bucks County is mostly Northern Piedmont. The wider page above you is answering a different question about different ground.
What Grows in Croydon
Every plant below cleared Croydon's own zone 7b and its 239-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Croydon?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 25 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 19 — 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 Croydon
Spotted lanternfly documented 2 miles from Croydon, first recorded 2017. What to watch for.
What's on the federal record near Croydon
Closest first, within ~10 miles of Croydon. Listing isn't leaking, and distance isn't exposure.
- SABATINI CONCRETE PIPE & PRODUnderground Storage Tanks · 800 ft
- CAYUGA CONCRETE PIPEToxics Release Inventory · 1700 ft
- BRISTOL FOOD MARTUnderground Storage Tanks · 1900 ft
- ARMOLOGY CO OF PHILADELPHIABrownfields · 2400 ft
- TRINSEO POLYMER RELEASESuperfund · 2500 ft
- CROYDON GENERATING STATIONBrownfields · 2500 ft
- CROYDON GENERATING STATIONToxics Release Inventory · 2500 ft
- SIMPSON SIGN COUnderground Storage Tanks · 2500 ft
- SAMS AUTO REPAIRUnderground Storage Tanks · 2600 ft
- BRENNER TOOL & DIE INCToxics Release Inventory · 2600 ft
- JAMES J WEITZEL INCUnderground Storage Tanks · 2600 ft
- BRISTOL TWP PUBLIC WORKSUnderground Storage Tanks · 0.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Croydon'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 Croydon.
Sources Checked
within ~10 miles of Croydon
Severity Distribution
within ~10 miles of Croydon
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Croydon
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 Croydon average
Your land is one point inside Croydon
Everything above resolves to Croydon as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Croydon Average
Croydon Average
- ●USDA Zones 7b, averaged across Croydon
- ●One soil character for all of Croydon
- ●Frost dates read at Croydon's scale: Mar 25 to Nov 19
YOUR Parcel
- ✓Your exact zone, not Croydon's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Croydon
Pull a site-specific report for your exact address in Croydon, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Croydon averages can't show:
We read public map data around Croydon — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Croydon average
How we know this about Croydon
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 Croydon’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 Croydon
When does frost risk typically end in Croydon?
The last hard freeze (28°F) in Croydon typically lands around Mar 25, 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 15.
When is the first frost in Croydon?
The first hard freeze (28°F) in Croydon typically arrives around Nov 19, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 5, so the watching starts about Oct 20 — about 239 days after the spring freeze cleared.
How long is the growing season in Croydon?
Measured between 28°F hard freezes, Croydon sees about 239 frost-free days — roughly Mar 25 through Nov 19, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 15 to Nov 5, about 204 days.
Is the soil safe to grow vegetables in Croydon?
The federal record around Croydon runs heavier than most — 3,294 documented sites, mostly Underground Storage Tanks entries (1,594), 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 Croydon?
From about Oct 20 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 19 (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 19. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Croydon's scale — its 7b band and its 239-day season. Your yard writes its own version of Croydon'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 Croydon’s own scale
7 of the readings below were taken at Croydon's own scale — its own ~239-day season between 28°F freezes, the 1,586 acres it covers and 3,294 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Croydon's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Croydon's own 28°F hard-freeze dates, about Mar 25 and Nov 19 and the ~239-day span between themNOAA 1991–2020 Climate Normals
- 3,294 documented contamination sites on the federal record near Croydon, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Croydon's boundary and the 1,586 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~239-day seasonGrowable Ground crop-matching engine
- Croydon sits in the Middle Atlantic Coastal Plain — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Croydonlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Croydon's 1,586 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 Croydon's 1,586 acreswhy one lot differs from the next →
- Which side of Croydon you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,586 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 Croydon-wide figureread your own land →
More in Pennsylvania
Nearby growing guides