Perryman, Maryland, 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 Perryman, 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 Perryman 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 Perryman — soil, climate, flood, and parcel records. How we handle your address.
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Perryman — the short answer
Perryman, Maryland: USDA zone 7b, about 247 days between hard freezes, across 3K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 23
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~247
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 3K 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 Perryman's average, not your lot's — a low corner or a tree line moves it. Against Perryman's 247-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Perryman
Each reading below is measured for Perryman itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredPerryman runs about 247 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
MeasuredPerryman 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 Perryman is in
Perryman sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Perryman's own centroid, and it is not what its county reads: Harford County is mostly Northern Piedmont. The wider page above you is answering a different question about different ground.
What Grows in Perryman
Every plant below cleared Perryman's own zone 7b and its 247-day season. Each card opens that plant's Maryland profile. How we score.
Is it too late to plant in Perryman?
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 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 21 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 23 — 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 Perryman
Spotted lanternfly documented 1 miles from Perryman, first recorded 2020. What to watch for.
What's on the federal record near Perryman
Closest first, within ~10 miles of Perryman. Listing isn't leaking, and distance isn't exposure.
- Randall & Susan StrockUnderground Storage Tanks · 0.6 mi
- DIAMOND GLAZE REFINISHING COBrownfields · 0.6 mi
- GXO LOGISTICS SUPPLY CHAIN, INC.Brownfields · 0.7 mi
- Perryman Grocery Inc.Underground Storage Tanks · 0.7 mi
- F. O. Mitchell & Brothers Inc.Underground Storage Tanks · 0.7 mi
- Sod Run W.W.T.P.Underground Storage Tanks · 0.7 mi
- Price Brothers, Inc.Underground Storage Tanks · 0.9 mi
- HA De 28Nitrate · 0.9 mi
- PRICE BROTHERS COMPANYToxics Release Inventory · 1.0 mi
- CLOROX SALES COMPANYBrownfields · 1.0 mi
- LIFOAM INDUSTRIES, LLCToxics Release Inventory · 1.1 mi
- LIFOAM INDUSTRIES, LLCBrownfields · 1.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Perryman'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 Perryman.
Sources Checked
within ~10 miles of Perryman
Severity Distribution
within ~10 miles of Perryman
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 Perryman
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 Perryman average
Your land is one point inside Perryman
Everything above resolves to Perryman as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Perryman Average
Perryman Average
- ●USDA Zones 7b, averaged across Perryman
- ●One soil character for all of Perryman
- ●Frost dates read at Perryman's scale: Mar 21 to Nov 23
YOUR Parcel
- ✓Your exact zone, not Perryman's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Perryman
Pull a site-specific report for your exact address in Perryman, Maryland — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Perryman averages can't show:
We read public map data around Perryman — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Perryman average
How we know this about Perryman
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 Perryman’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 Perryman
When does frost risk typically end in Perryman?
The last hard freeze (28°F) in Perryman typically lands around Mar 21, 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 11.
When is the first frost in Perryman?
The first hard freeze (28°F) in Perryman typically arrives around Nov 23, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 9, so the watching starts about Oct 24 — about 247 days after the spring freeze cleared.
How long is the growing season in Perryman?
Measured between 28°F hard freezes, Perryman sees about 247 frost-free days — roughly Mar 21 through Nov 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 11 to Nov 9, about 212 days.
Is the soil safe to grow vegetables in Perryman?
The federal record around Perryman runs heavier than most — 1,006 documented sites, mostly Underground Storage Tanks entries (422), the nearest Underground Storage Tanks record about 0.6 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 Perryman?
From about Oct 24 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 23 (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 23. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Perryman's scale — its 7b band and its 247-day season. Your yard writes its own version of Perryman'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 Perryman’s own scale
7 of the readings below were taken at Perryman's own scale — its own ~247-day season between 28°F freezes, the 3,487 acres it covers and 1,006 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Perryman's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Perryman's own 28°F hard-freeze dates, about Mar 21 and Nov 23 and the ~247-day span between themNOAA 1991–2020 Climate Normals
- 1,006 documented contamination sites on the federal record near Perryman, the closest Underground Storage Tanks record about 0.6 miles out from the town centreFederal environmental registers
- Perryman's boundary and the 3,487 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~247-day seasonGrowable Ground crop-matching engine
- Perryman 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 Perrymanlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Perryman's 3,487 acres read through its county's SSURGO summaryfrom Harford County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Harford County
- The growing challenges every Maryland grower plans around — written at state scale, so they stay on the state guidefrom Maryland
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Harford County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Perryman's 3,487 acreswhy one lot differs from the next →
- Which side of Perryman you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,487 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.6 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 Perryman-wide figureread your own land →
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