Kingstown, Maryland, sits in USDA hardiness zone 7b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
A short list that earns its place here — cabbage, prickly pear, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Kingstown, 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 Kingstown 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 Kingstown — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Kingstown — the short answer
Kingstown, Maryland: USDA zone 7b, about 235 days between hard freezes, across 1K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 24
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~235
- 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 7b is Kingstown's average, not your lot's — a low corner or a tree line moves it. Against Kingstown's 235-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Kingstown
Each reading below is measured for Kingstown itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredKingstown runs about 235 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
MeasuredKingstown 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 Kingstown is in
Kingstown sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Kingstown's own centroid rather than borrowed from Queen Anne's County.
What Grows in Kingstown
Every plant below cleared Kingstown's own zone 7b and its 235-day season. Each card opens that plant's Maryland profile. How we score.
Is it too late to plant in Kingstown?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 24; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 24 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 14 — 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 Kingstown
Spotted lanternfly documented 3 miles from Kingstown, first recorded 2021. What to watch for.
What's on the federal record near Kingstown
Closest first, within ~10 miles of Kingstown. Listing isn't leaking, and distance isn't exposure.
- QA Be 18Nitrate · 2400 ft
- QA Be 15Nitrate · 2400 ft
- QA Be 16Nitrate · 2400 ft
- QA Be 17Nitrate · 2400 ft
- Kings Town Tractor CompanyUnderground Storage Tanks · 2600 ft
- MAGNOLIA FURNITURE STRIPPING & PAINTINGBrownfields · 0.5 mi
- Park Carpet WarehouseUnderground Storage Tanks · 0.5 mi
- Estate of Kathryn S. TuckerUnderground Storage Tanks · 0.6 mi
- Ramsey PontiacUnderground Storage Tanks · 0.6 mi
- Sam O. LamuthUnderground Storage Tanks · 0.6 mi
- Don Tonio'sUnderground Storage Tanks · 0.8 mi
- Truslow Farms Clorea TruslowUnderground Storage Tanks · 0.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Kingstown'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 Kingstown.
Total Sites
529
within ~10 miles of Kingstown
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Kingstown
Severity Distribution
within ~10 miles of Kingstown
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Kingstown, two things run higher than the national average within ~10 miles of Kingstown — CAFO (25 sites) and Nitrate (326 sites). That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Kingstown
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 Kingstown average
Your land is one point inside Kingstown
Everything above resolves to Kingstown 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 Kingstown Average
Kingstown Average
- ●USDA Zones 7b, averaged across Kingstown
- ●One soil character for all of Kingstown
- ●Frost dates read at Kingstown's scale: Mar 24 to Nov 14
YOUR Parcel
- ✓Your exact zone, not Kingstown's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Kingstown
Pull a site-specific report for your exact address in Kingstown, Maryland — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Kingstown averages can't show:
We read public map data around Kingstown — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Kingstown average
How we know this about Kingstown
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 Kingstown’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 Kingstown
When does frost risk typically end in Kingstown?
The last hard freeze (28°F) in Kingstown typically lands around Mar 24, 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 14.
When is the first frost in Kingstown?
The first hard freeze (28°F) in Kingstown typically arrives around Nov 14, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 31, so the watching starts about Oct 15 — about 235 days after the spring freeze cleared.
How long is the growing season in Kingstown?
Measured between 28°F hard freezes, Kingstown sees about 235 frost-free days — roughly Mar 24 through Nov 14, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 14 to Oct 31, about 200 days.
Is the soil safe to grow vegetables in Kingstown?
The federal record around Kingstown is a meaningful one — 529 documented sites, mostly Nitrate entries (326), the nearest Nitrate record about 0.5 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 Kingstown?
From about Oct 15 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 14 (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 14. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Kingstown's scale — its 7b band and its 235-day season. Your yard writes its own version of Kingstown'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 Kingstown’s own scale
7 of the readings below were taken at Kingstown's own scale — its own ~235-day season between 28°F freezes, the 1,450 acres it covers and 529 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Kingstown's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Kingstown's own 28°F hard-freeze dates, about Mar 24 and Nov 14 and the ~235-day span between themNOAA 1991–2020 Climate Normals
- 529 documented contamination sites on the federal record near Kingstown, the closest Nitrate record about 0.5 miles out from the town centreFederal environmental registers
- Kingstown's boundary and the 1,450 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~235-day seasonGrowable Ground crop-matching engine
- The ecoregion at Kingstown's own centroid, the Middle Atlantic Coastal PlainUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Kingstownlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Kingstown's 1,450 acres read through its county's SSURGO summaryfrom Queen Anne's County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Queen Anne's 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 Queen Anne's County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Kingstown's 1,450 acreswhy one lot differs from the next →
- Which side of Kingstown you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,450 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 Kingstown-wide figureread your own land →