Glenburn, Pennsylvania, sits in USDA hardiness zone 6a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
The conditions favor cabbage, hazelnut, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Glenburn, 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 Glenburn 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 Glenburn — soil, climate, flood, and parcel records. How we handle your address.
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Glenburn — the short answer
Glenburn, Pennsylvania: USDA zone 6a, about 181 days between hard freezes, across 1K acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 22
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~181
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K 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 6a is Glenburn's average, not your lot's — a low corner or a tree line moves it. Against Glenburn's 181-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Glenburn
Each reading below is measured for Glenburn itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGlenburn runs about 181 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredGlenburn sits in USDA hardiness zone 6a.
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 Glenburn is in
Glenburn sits in the Northern Allegheny Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Glenburn's own centroid, and it is not what its county reads: Lackawanna County is mostly Ridge and Valley. The wider page above you is answering a different question about different ground.
What Grows in Glenburn
Every plant below cleared Glenburn's own zone 6a and its 181-day season. Each card opens that plant's Pennsylvania profile. How we score.
Is it too late to plant in Glenburn?
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 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 22 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 20 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
Documented around Glenburn
Spotted lanternfly documented 2 miles from Glenburn, first recorded 2020. What to watch for.
What's on the federal record near Glenburn
Closest first, within ~10 miles of Glenburn. Listing isn't leaking, and distance isn't exposure.
- LK 404Nitrate · 0.5 mi
- PRECISION NATL PLATING SERVICES INCToxics Release Inventory · 0.6 mi
- AB AUTO BODYBrownfields · 0.7 mi
- GLEN OAK CCUnderground Storage Tanks · 0.8 mi
- LK 190Nitrate · 0.9 mi
- DALTON TRAIL GARAGEUnderground Storage Tanks · 0.9 mi
- CLARKS SUMMIT MOTORSUnderground Storage Tanks · 1.0 mi
- LK 89Nitrate · 1.1 mi
- LK 431Nitrate · 1.1 mi
- HENRY SCHULTZ GAS STA ESTATEUnderground Storage Tanks · 1.2 mi
- WAVERLY COMM HOUSEUnderground Storage Tanks · 1.2 mi
- WAVERLY TWPUnderground Storage Tanks · 1.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Glenburn'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 Glenburn.
Sources Checked
within ~10 miles of Glenburn
Severity Distribution
within ~10 miles of Glenburn
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 Glenburn
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 Glenburn average
Your land is one point inside Glenburn
Everything above resolves to Glenburn as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Glenburn Average
Glenburn Average
- ●USDA Zones 6a, averaged across Glenburn
- ●One soil character for all of Glenburn
- ●Frost dates read at Glenburn's scale: Apr 22 to Oct 20
YOUR Parcel
- ✓Your exact zone, not Glenburn's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Glenburn
Pull a site-specific report for your exact address in Glenburn, Pennsylvania — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Glenburn averages can't show:
We read public map data around Glenburn — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Glenburn average
How we know this about Glenburn
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 Glenburn’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 Glenburn
When does frost risk typically end in Glenburn?
The last hard freeze (28°F) in Glenburn typically lands around Apr 22, 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 May 13.
When is the first frost in Glenburn?
The first hard freeze (28°F) in Glenburn typically arrives around Oct 20, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 6, so the watching starts about Sep 20 — about 181 days after the spring freeze cleared.
How long is the growing season in Glenburn?
Measured between 28°F hard freezes, Glenburn sees about 181 frost-free days — roughly Apr 22 through Oct 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 13 to Oct 6, about 146 days.
Is the soil safe to grow vegetables in Glenburn?
The federal record around Glenburn runs heavier than most — 855 documented sites, mostly Underground Storage Tanks entries (465), the nearest Nitrate record about 0.5 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 Glenburn?
From about Sep 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 Oct 20 (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 Oct 20. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Glenburn's scale — its 6a band and its 181-day season. Your yard writes its own version of Glenburn'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 Glenburn’s own scale
7 of the readings below were taken at Glenburn's own scale — its own ~181-day season between 28°F freezes, the 1,122 acres it covers and 855 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Glenburn's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Glenburn's own 28°F hard-freeze dates, about Apr 22 and Oct 20 and the ~181-day span between themNOAA 1991–2020 Climate Normals
- 855 documented contamination sites on the federal record near Glenburn, the closest Nitrate record about 0.5 miles out from the town centreFederal environmental registers
- Glenburn's boundary and the 1,122 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~181-day seasonGrowable Ground crop-matching engine
- Glenburn sits in the Northern Allegheny Plateau — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Glenburnlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Glenburn's 1,122 acres read through its county's SSURGO summaryfrom Lackawanna County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Lackawanna 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 Lackawanna County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Glenburn's 1,122 acreswhy one lot differs from the next →
- Which side of Glenburn you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,122 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 0.5 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 Glenburn-wide figureread your own land →
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