When to plant in Perry Hall, MD
USDA Zone 7bEverything below — frost dates, hardiness zone, and what to plant when in Perry Hall, Maryland — is derived from the closest NOAA station with complete climate normals.
These dates come from a station roughly 16 km away, the closest with full normals; terrain around Perry Hall (elevation, water, pavement) can move your real frost dates a few days either way. Zone 7b means many perennials and even some tender shrubs overwinter in Perry Hall, while your frost dates still decide when annuals go out.
Frost probability
CYLBURN · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Perry Hall’s own odds, recorded at CYLBURN.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 1 | Apr 14 | Apr 2 | Oct 13 | Oct 27 | Nov 9 |
| 32°F | Apr 13 | Apr 2 | Mar 20 | Oct 27 | Nov 7 | Nov 21 |
| 28°F | Apr 3 | Mar 22 | Mar 8 | Nov 6 | Nov 20 | Dec 7 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Perry Hall, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 27 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Perry Hall planting FAQ
When is the last spring frost in Perry Hall, MD?
On average, the last spring frost in Perry Hall is around April 2 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Perry Hall, MD?
Expect Perry Hall's first fall frost near November 7 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Perry Hall in?
Perry Hall is in USDA hardiness zone 7b. In zone 7b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Perry Hall?
There are roughly 219 frost-free days in Perry Hall (a long growing season), running from the average last frost around April 2 to the first fall frost near November 7.
When should I plant tomatoes in Perry Hall?
In Perry Hall, start tomato seeds indoors around February 5–February 19, then transplant seedlings outdoors around April 9 once the danger of frost has passed.
Never miss a window in Perry Hall
An email when it’s time to start seeds, transplant, and sow — timed to Perry Hall’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- White Marsh · 3 km
- Carney · 4 km
- Honeygo · 4 km
- Rossville · 6 km
- Overlea · 6 km
- Parkville · 7 km
- Middle River · 9 km
- Rosedale · 9 km
Frost dates recorded at CYLBURN, 16 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Perry Hall, MD — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00182308. Retrieved from https://blissgarden.com/maryland/perry-hall.