Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 20782 — Hyattsville, MD

ZIP code 20782 (Hyattsville, Prince George's County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 29 and the first fall frost November 8.

Where ZIP 20782 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone7b5 to 10 °F
Coldest night−15 to −12.2 °C
Last frostMar 29
First frostNov 8
2012 zone7a

Was 7a on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Hyattsville, MD…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Hyattsville, MD

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 29median — 50% chance of a later frost
Safe for tender plantsApril 11only 10% chance of frost after
First fall frostNovember 8median — 10% chance by Oct 26
Growing season224 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 17 and returns around November 20.

From the NOAA station Natl Arboretum Dc, MD — 4 miles away, elevation 49 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 20782

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 15 – Mar 1
SpinachSow outdoors · Feb 15 – Mar 8
Broccoli, cabbageStart indoors · Jan 18 – Feb 1
Broccoli, cabbageTransplant · Mar 8 – Mar 22
Onion setsPlant outdoors · Mar 1 – Mar 15
PotatoesPlant outdoors · Mar 8 – Mar 22
LettuceSow outdoors · Mar 1 – Mar 15
Carrots, beetsSow outdoors · Mar 8 – Mar 22
TomatoesStart indoors · Feb 1 – Feb 15
TomatoesTransplant · Apr 5 – Apr 19
Peppers, eggplantStart indoors · Jan 18 – Feb 1
Peppers, eggplantTransplant · Apr 12 – Apr 26
BeansSow outdoors · Apr 5 – Apr 19
Sweet cornSow outdoors · Apr 5 – Apr 19
Cucumbers, squashSow outdoors · Apr 5 – Apr 19
Fall lettuce, spinachSow outdoors · Sep 13 – Sep 27
GarlicPlant cloves · Oct 25 – Nov 29
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 29) and first fall frost (Nov 8) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 20782 came on Mar 11 — about the same time as the 1991–2020 average (Mar 11).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Native plants for zone 7b in Maryland

618 plants native to the lower 48 states, recorded in Maryland, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. Each links to its USDA PLANTS profile.

Trees 83

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 127

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °F

Wildflowers & perennials 206

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican speedwell0.8 ft · blooms mid summer · low shade tolerance · to −38 °FAmerican spongeplant0.5 ft · blooms mid spring · high shade tolerance · to −24 °F

Grasses 176

American beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °FAtlantic mannagrass3 ft · blooms summer · low shade tolerance · to −8 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °F

Vines 12

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Fgraybark grape50 ft · blooms late spring · medium shade tolerance · to −8 °Fheartleaf peppervine2 ft · blooms late spring · low shade tolerance · to −8 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Hyattsville, MD.

Soil in Hyattsville, MD

The soil mapped at the center of ZIP 20782 is Russett — fine sandy loam, moderately well drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding
pH3.9strongly acidic; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter5%high
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Russett-Christiana-Urban land complex, 0 to 5 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 20782; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Hyattsville, MD

Summer high90 °Faverage high, July
Winter low28 °Faverage low, January
Hot days48days a year at 90 °F or more
Freezing nights84nights a year at 32 °F or less
Growing degree days4,518base 50 °F — the season’s usable heat
Longest day14 h 54 mindaylight on June 21
Shortest day9 h 26 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation48 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 45 °F, low 28 °F 45°28° JanFebruary: average high 48 °F, low 30 °F 48°30° FebMarch: average high 56 °F, low 37 °F 56°37° MarApril: average high 68 °F, low 46 °F 68°46° AprMay: average high 77 °F, low 57 °F 77°57° MayJune: average high 85 °F, low 66 °F 85°66° JunJuly: average high 90 °F, low 71 °F 90°71° JulAugust: average high 88 °F, low 69 °F 88°69° AugSeptember: average high 82 °F, low 62 °F 82°62° SepOctober: average high 70 °F, low 49 °F 70°49° OctNovember: average high 58 °F, low 39 °F 58°39° NovDecember: average high 49 °F, low 32 °F 49°32° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 3.16 in precipitation 3.2 JanFebruary: 2.72 in precipitation 2.7 FebMarch: 3.86 in precipitation 3.9 MarApril: 3.56 in precipitation 3.6 AprMay: 4.66 in precipitation 4.7 MayJune: 5.22 in precipitation 5.2 JunJuly: 4.62 in precipitation 4.6 JulAugust: 4.16 in precipitation 4.2 AugSeptember: 4.48 in precipitation 4.5 SepOctober: 4.32 in precipitation 4.3 OctNovember: 3.34 in precipitation 3.3 NovDecember: 3.93 in precipitation 3.9 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Natl Arboretum Dc, MD (4 mi away); precipitation: Takoma Park 0.6 Nnw, MD (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7b.

207887b
Hyattsville, MD · <1 mi
207817b
Hyattsville, MD · 1 mi
207127b
Mount Rainier, MD · 2 mi
207877b
Hyattsville, MD · 2 mi
207837b
Hyattsville, MD · 2 mi
209127b
Takoma Park, MD · 2 mi
207427b
College Park, MD · 2 mi
207227b
Brentwood, MD · 2 mi

All 7 ZIP codes in Hyattsville → · Maryland planting zones →

Questions about 20782

What planting zone is ZIP code 20782?

ZIP code 20782 (Hyattsville, MD) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Hyattsville, MD?

The median last spring frost (32 °F) near 20782 is March 29; after April 11 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Natl Arboretum Dc station.

When is the first frost in Hyattsville, MD?

The median first fall frost near 20782 is November 8, giving a median frost-free growing season of 224 days.

When should I plant tomatoes in 20782?

Start tomato seeds indoors around Feb 1 – Feb 15 and set transplants outside around Apr 5 – Apr 19, one to three weeks after the median last frost.

How much rain and snow does 20782 get?

About 48 inches of precipitation a year (NOAA 1991–2020 normals, Takoma Park 0.6 Nnw station).

How hot do summers get in Hyattsville, MD?

The average high peaks at 90 °F in July, with about 48 days a year at 90 °F or more.

What kind of soil does 20782 have?

The USDA soil survey maps Russett at the center of ZIP 20782: fine sandy loam, moderately well drained, pH about 3.9 (strongly acidic).

Did spring come early in Hyattsville, MD in 2026?

Spring leaf-out near 20782 came on Mar 11 in 2026, about the same as the 1991–2020 average (Mar 11), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Hyattsville, MD?

Intermediate onions: the longest day near 20782 is 14 h 54 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 20782 change?

Yes. The 2012 USDA map put 20782 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.