Redland, Maryland, sits in USDA hardiness zone 7b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
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 Redland, 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 Redland 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 Redland — soil, climate, flood, and parcel records. How we handle your address.
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Redland — the short answer
Redland, Maryland: USDA zone 7b, about 227 days between hard freezes, across 5K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~227
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 5K 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 Redland's average, not your lot's — a low corner or a tree line moves it. Against Redland's 227-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Redland
Each reading below is measured for Redland itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRedland runs about 227 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
MeasuredRedland 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 Redland is in
Redland sits in the Northern Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Redland's own centroid rather than borrowed from Montgomery County.
What Grows in Redland
Every plant below cleared Redland's own zone 7b and its 227-day season. Each card opens that plant's Maryland profile. How we score.
Is it too late to plant in Redland?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 28; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 10 — 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 Redland
Spotted lanternfly documented 3 miles from Redland, first recorded 2018. What to watch for.
What's on the federal record near Redland
Closest first, within ~10 miles of Redland. Listing isn't leaking, and distance isn't exposure.
- CANDLEWOOD ELEMENTARY SCHOOLBrownfields · 1200 ft
- REDLAND MIDDLE SCHOOLBrownfields · 0.8 mi
- Needwood MansionUnderground Storage Tanks · 0.8 mi
- Needwood Golf CourseUnderground Storage Tanks · 0.8 mi
- Exxon # 27475 / # 0342 - 3498Underground Storage Tanks · 0.8 mi
- CVS PHARMACY #1504Brownfields · 0.8 mi
- CWP, Inc. T/A Redland LibertyUnderground Storage Tanks · 0.9 mi
- NU-LOOK ONE HOUR CLEANERSBrownfields · 0.9 mi
- Bozzuto GroupUnderground Storage Tanks · 0.9 mi
- Rock Creek Park Maintenance YardUnderground Storage Tanks · 1.0 mi
- Gaithersburg-Washington Grove Fire Dept.Underground Storage Tanks · 1.1 mi
- Liquor WarehouseUnderground Storage Tanks · 1.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Redland'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 Redland.
Total Sites
1,856
within ~10 miles of Redland
Risk Level
Elevated
Highest-severity
12 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Redland
Severity Distribution
within ~10 miles of Redland
Highest-Severity Sites
Know Before You Grow
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Redland
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 Redland average
Your land is one point inside Redland
Everything above resolves to Redland as a whole — one PHZM band and one 28°F frost record, read across 5K 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 Redland Average
Redland Average
- ●USDA Zones 7b, averaged across Redland
- ●One soil character for all of Redland
- ●Frost dates read at Redland's scale: Mar 28 to Nov 10
YOUR Parcel
- ✓Your exact zone, not Redland's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Redland
Pull a site-specific report for your exact address in Redland, Maryland — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Redland averages can't show:
We read public map data around Redland — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Redland average
How we know this about Redland
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 Redland’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 Redland
When does frost risk typically end in Redland?
The last hard freeze (28°F) in Redland typically lands around Mar 28, 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 18.
When is the first frost in Redland?
The first hard freeze (28°F) in Redland typically arrives around Nov 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 27, so the watching starts about Oct 11 — about 227 days after the spring freeze cleared.
How long is the growing season in Redland?
Measured between 28°F hard freezes, Redland sees about 227 frost-free days — roughly Mar 28 through Nov 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 18 to Oct 27, about 192 days.
Is the soil safe to grow vegetables in Redland?
The federal record around Redland is a meaningful one — 1,856 documented sites, mostly Brownfields entries (868), the nearest Brownfields record about 0.2 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 Redland?
From about Oct 11 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 10 (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 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Redland's scale — its 7b band and its 227-day season. Your yard writes its own version of Redland'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 Redland’s own scale
7 of the readings below were taken at Redland's own scale — its own ~227-day season between 28°F freezes, the 4,598 acres it covers and 1,856 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Redland's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Redland's own 28°F hard-freeze dates, about Mar 28 and Nov 10 and the ~227-day span between themNOAA 1991–2020 Climate Normals
- 1,856 documented contamination sites on the federal record near Redland, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Redland's boundary and the 4,598 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~227-day seasonGrowable Ground crop-matching engine
- The ecoregion at Redland's own centroid, the Northern PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Redlandlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Redland's 4,598 acres read through its county's SSURGO summaryfrom Montgomery County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Montgomery 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 Montgomery County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Redland's 4,598 acreswhy one lot differs from the next →
- Which side of Redland you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,598 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Redland-wide figureread your own land →
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