Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 17309 — Brogue, PA

ZIP code 17309 (Brogue, York County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 1 and the first fall frost November 10.

Where ZIP 17309 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.

Zone7a0 to 5 °F

Coldest night−17.8 to −15 °C

Last frostApr 1

First frostNov 10

2012 zone7a

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Brogue, PA…

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 Brogue, PA

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostApril 1median — 50% chance of a later frost

Safe for tender plantsApril 13only 10% chance of frost after

First fall frostNovember 10median — 10% chance by Oct 28

Growing season221 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 22 and returns around November 22.

From the NOAA station Safe Harbor Dam, PA — 5 miles away, elevation 194 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 17309

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 18 – Mar 4

SpinachSow outdoors · Feb 18 – Mar 11

Broccoli, cabbageStart indoors · Jan 21 – Feb 4

Broccoli, cabbageTransplant · Mar 11 – Mar 25

Onion setsPlant outdoors · Mar 4 – Mar 18

PotatoesPlant outdoors · Mar 11 – Mar 25

LettuceSow outdoors · Mar 4 – Mar 18

Carrots, beetsSow outdoors · Mar 11 – Mar 25

TomatoesStart indoors · Feb 4 – Feb 18

TomatoesTransplant · Apr 8 – Apr 22

Peppers, eggplantStart indoors · Jan 21 – Feb 4

Peppers, eggplantTransplant · Apr 15 – Apr 29

BeansSow outdoors · Apr 8 – Apr 22

Sweet cornSow outdoors · Apr 8 – Apr 22

Cucumbers, squashSow outdoors · Apr 8 – Apr 22

Fall lettuce, spinachSow outdoors · Sep 15 – Sep 29

GarlicPlant cloves · Oct 27 – Dec 1

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 1) and first fall frost (Nov 10) 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 17309 came on Mar 22 — 4 days earlier than the 1991–2020 average (Mar 26).

average
Mar 262026
Mar 22

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 7a in Pennsylvania

620 plants native to the lower 48 states, recorded in Pennsylvania, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. Each links to its USDA PLANTS profile.

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 Brogue, PA.

Soil in Brogue, PA

The soil mapped at the center of ZIP 17309 is Glenelg — channery silt loam, well drained.

TextureChannery silt loama good balance for most vegetables

pH5.4strongly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2%moderate

Hydrologic groupBwater soaks in moderately

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Glenelg channery silt loam, 8 to 15 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 17309; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Brogue, PA

Summer high87 °Faverage high, July

Winter low25 °Faverage low, January

Hot days20days a year at 90 °F or more

Freezing nights87nights a year at 32 °F or less

Growing degree days3,703base 50 °F — the season’s usable heat

Longest day15 h 00 mindaylight on June 21

Shortest day9 h 20 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation46.3 inper year, rain and melted snow

Snowfall21 inper year; 21 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Safe Harbor Dam, PA (5 mi away); precipitation: Safe Harbor Dam, PA (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

East Prospect, PA · 8 mi

Pennsylvania planting zones →

Questions about 17309

What planting zone is ZIP code 17309?

ZIP code 17309 (Brogue, PA) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Brogue, PA?

The median last spring frost (32 °F) near 17309 is April 1; after April 13 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Safe Harbor Dam station.

When is the first frost in Brogue, PA?

The median first fall frost near 17309 is November 10, giving a median frost-free growing season of 221 days.

When should I plant tomatoes in 17309?

Start tomato seeds indoors around Feb 4 – Feb 18 and set transplants outside around Apr 8 – Apr 22, one to three weeks after the median last frost.

How much rain and snow does 17309 get?

About 46.3 inches of precipitation a year and 21 inches of snowfall (NOAA 1991–2020 normals, Safe Harbor Dam station).

How hot do summers get in Brogue, PA?

The average high peaks at 87 °F in July, with about 20 days a year at 90 °F or more.

What kind of soil does 17309 have?

The USDA soil survey maps Glenelg at the center of ZIP 17309: channery silt loam, well drained, pH about 5.4 (strongly acidic).

Did spring come early in Brogue, PA in 2026?

Spring leaf-out near 17309 came on Mar 22 in 2026, 4 days earlier than the 1991–2020 average (Mar 26), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Brogue, PA?

Long-day onions: the longest day near 17309 is 15 h 00 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).