Worcester County, in 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.
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.
Worcester County lies within Delmarva Peninsula and Tidewater & Chesapeake — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Worcester County holds more than one microclimate.
Soils and elevations shift across Worcester County, so your frost dates and drainage aren't the county average. 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 Worcester County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Worcester County — the short answer
Worcester County, Maryland: USDA zone 7b, about 249 days between hard freezes, across 300K acres.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 20
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 24
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~249
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 300K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 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 Worcester County's average, not your lot's — a low corner or a tree line moves it. Against Worcester County's 249-day season, see what your own ground reads.
Heat and winter chill in Worcester County
Across a year, Worcester County accumulates about 3,896 growing degree days above 50°F, about 32 more than the middle Maryland county — ahead of 14 of Maryland’s 24 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Winter banks about 2,169 hours below 45°F. Chill is what tells a fruit tree its dormancy is over, and it is set by climate rather than by anything you can build.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Worcester County
Across Worcester County, the ground is predominantly Ultisols, where Othello, Fallsington, and Berryland are the most extensive named soil series. The soil is generally poorly drained with a loamy sand surface. Topsoil pH runs about 5.3–6.3, moderately acidic. Rainfall drains through hydrologic group A/D soils.
Soil order
Ultisols
Drainage
Poorly drained
Prime farmland
18%
Hydric soils
66%
Soil still varies lot by lot — soil types explained.
How the ground varies across Worcester County
The USDA soil survey maps 28% of Worcester County as poorly drained — but another 65% drains differently: 20% very poorly drained, 14% subaqueous.
Othello is the most extensive named soil at 12% of mapped acres, then Fallsington (8%) and Berryland (6%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Worcester County
Each reading below is measured for Worcester County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Worcester County are poorly drained, in hydrologic group A/D — ground that sheds water slowly.
Beds can stay saturated for days after heavy rain, and the roots of most vegetables, berries, and fruit trees suffocate or rot in soil that never drains.
Raised beds or mounded rows lift roots above the wet zone; choose water-tolerant crops for the lowest spots.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Worcester County runs about pH 5.3–6.3, on the acidic side.
Blueberries, potatoes, and rhododendrons thrive in it, but most vegetables start locking out nutrients below about pH 6.0 and grow pale and stunted no matter how much you feed them.
A measured lime application raises pH for the crops that need it — but test first, because the right rate depends on your own soil, not the county average.
USDA NRCS SSURGO
Season length
MeasuredWorcester County runs about 249 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
MeasuredWorcester County 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 Worcester County is in
Worcester County sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. One consistent ecological setting across the whole county.
What Grows in Worcester County
We scored all 1,086 plants against Worcester County's own USDA zone 7b and its own 249-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's Maryland profile.
Is it too late to plant in Worcester County?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Feb 20; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 20 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 24 — 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 Worcester County
Spotted lanternfly documented 24 miles from Worcester County, first recorded 2022. What to watch for.
- Japanese beetle12 documented records
- monarch butterfly98 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Worcester County
USGS estimates 39,723 lb of Atrazine on Worcester County farmland in 2019, its largest by weight, ahead of 2,4-d (23,705 lb) and Acetochlor (19,724 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Worcester County — and how to grow with it.
We checked the federal record across Worcester County — 767 documented sites across 7 of the 9 source types we track.
The most significant on record: 1 Superfund site (none NPL-listed). Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
There's a meaningful federal record across Worcester County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Worcester County
Closest first, across Worcester County. Listing isn't leaking, and distance isn't exposure.
- MIKE & NANCY DONOWAY FARMCAFO · 0.9 mi
- A & B LEWIS, LLCCAFO · 1.0 mi
- State Highway AdministrationUnderground Storage Tanks · 1.1 mi
- WO De 38Nitrate · 1.5 mi
- Worcester Co. Board of Ed. & Career & Technology CenterUnderground Storage Tanks · 1.8 mi
- WORCESTER COUNTY BOARD OF EDUCATIONBrownfields · 1.8 mi
- Tyndalls, Inc.Underground Storage Tanks · 1.8 mi
- HAI HA/HA NGUYEN FARM (EXPANSION)CAFO · 1.9 mi
- CUSTOM SCREEN PRINT COMPANYBrownfields · 1.9 mi
- MOHAMMAD NAWAZ/UMAR FARMCAFO · 1.9 mi
- WO De 33Nitrate · 2.1 mi
- WO De 37Nitrate · 2.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Worcester County'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 Worcester County.
Total Sites
767
across Worcester County
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
across Worcester County
Severity Distribution
across Worcester County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Worcester County, two things run higher than the national average across Worcester County — CAFO (111 sites) and Nitrate (282 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Worcester County
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 Worcester County average
Your land is one point inside Worcester County
Everything above resolves to Worcester County as a whole — one PHZM band and one county frost record, read across 300K 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 county 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 county average.
Your Lot vs the Worcester County Average
Worcester County Average
- ●USDA Zones 7b, averaged across Worcester County
- ●One soil character for all of Worcester County
- ●Frost dates read at Worcester County's scale: Mar 20 to Nov 24
YOUR Parcel
- ✓Your exact zone, not Worcester County's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Worcester County
Pull a site-specific report for your exact address in Worcester County, Maryland — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Worcester County averages can't show:
We read public map data around Worcester County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Worcester County average
How we know this about Worcester County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Worcester County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Worcester County
When does frost risk typically end in Worcester County?
The last hard freeze (28°F) in Worcester County typically lands around Mar 20, 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 10.
How long is the growing season in Worcester County?
Measured between 28°F hard freezes, Worcester County sees about 249 frost-free days — roughly Mar 20 through Nov 24, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 10 to Nov 10, about 214 days.
Is the soil safe to grow vegetables in Worcester County?
The federal record around Worcester County is a meaningful one — 767 documented sites, mostly Underground Storage Tanks entries (295), the nearest CAFO record about 0.9 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.
Everything above is measured at Worcester County's scale — its 7b band and its 249-day season. Your yard writes its own version of Worcester County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads Maryland's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Worcester County’s own scale
9 of the readings below were taken at Worcester County's own scale — its own ~249-day span between 28°F freezes, the 3 most extensive soil series mapped here and 767 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Worcester County's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Worcester County's own 28°F hard-freeze dates and its ~249-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Worcester CountyUSDA NRCS SSURGO
- 767 documented contamination sites inside the county boundary, distance-sorted from its center — the closest CAFO record about 0.9 miles outFederal environmental registers
- Worcester County's boundary and the 299,711 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~249-day seasonGrowable Ground crop-matching engine
- Worcester County sitting wholly inside the Middle Atlantic Coastal PlainUS EPA Level III Ecoregions
- Open occurrence records documented in Worcester County for 2 tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Worcester County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Maryland grower plans around — written at state scale, so they stay on the state guidefrom Maryland
What this page can’t tell you
- How the season shifts across Worcester County — the ~249 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Worcester County's 299,711 acreswhy one lot differs from the next →
- Which of those 767 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Worcester Countyread your own land →