When to plant in Bel Air, MD
USDA Zone 7bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Bel Air, Maryland — all computed from Bel Air's nearest NOAA weather station.
These dates come from a station roughly 17 km away, the closest with full normals; terrain around Bel Air (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 Bel Air, while your frost dates still decide when annuals go out.
Frost probability
ABERDEEN PHILLIPS FLD · 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 Bel Air’s own odds, recorded at ABERDEEN PHILLIPS FLD.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 12 | Apr 27 | Apr 9 | Oct 5 | Oct 19 | Nov 1 |
| 32°F | Apr 30 | Apr 10 | Mar 27 | Oct 14 | Oct 30 | Nov 12 |
| 28°F | Apr 12 | Mar 29 | Mar 13 | Oct 28 | Nov 10 | Nov 27 |
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 Bel Air, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 33 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.
Bel Air planting FAQ
When is the last spring frost in Bel Air, MD?
On average, the last spring frost in Bel Air is around April 10 (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 Bel Air, MD?
The first fall frost in Bel Air typically arrives around October 30 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Bel Air in?
Bel Air 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 Bel Air?
There are roughly 203 frost-free days in Bel Air (a moderate growing season), running from the average last frost around April 10 to the first fall frost near October 30.
When should I plant tomatoes in Bel Air?
In Bel Air, start tomato seeds indoors around February 13–February 27, then transplant seedlings outdoors around April 17 once the danger of frost has passed.
Never miss a window in Bel Air
An email when it’s time to start seeds, transplant, and sow — timed to Bel Air’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Bel Air North · 3 km
- Bel Air South · 4 km
- Fallston · 8 km
- Joppatowne · 13 km
- Edgewood · 13 km
- Aberdeen · 15 km
- Honeygo · 16 km
- Perry Hall · 18 km
Frost dates recorded at ABERDEEN PHILLIPS FLD, 17 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 Bel Air, MD — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00013701. Retrieved from https://blissgarden.com/maryland/bel-air.