When to plant in Annapolis, MD
USDA Zone 8aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Annapolis, Maryland — all computed from Annapolis's nearest NOAA weather station.
Zone 8a means many perennials and even some tender shrubs overwinter in Annapolis, while your frost dates still decide when annuals go out.
Frost probability
ANNAPOLIS POLICE BRKS · 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 Annapolis’s own odds, recorded at ANNAPOLIS POLICE BRKS.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 24 | Apr 7 | Mar 24 | Oct 21 | Nov 2 | Nov 15 |
| 32°F | Apr 9 | Mar 27 | Mar 9 | Nov 1 | Nov 13 | Dec 1 |
| 28°F | Mar 29 | Mar 14 | Feb 26 | Nov 9 | Nov 28 | Dec 19 |
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 Annapolis, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
Annapolis planting FAQ
When is the last spring frost in Annapolis, MD?
On average, the last spring frost in Annapolis is around March 27 (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 Annapolis, MD?
The first fall frost in Annapolis typically arrives around November 13 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Annapolis in?
Annapolis is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Annapolis?
There are roughly 231 frost-free days in Annapolis (a long growing season), running from the average last frost around March 27 to the first fall frost near November 13.
When should I plant tomatoes in Annapolis?
In Annapolis, start tomato seeds indoors around January 30–February 13, then transplant seedlings outdoors around April 3 once the danger of frost has passed.
Never miss a window in Annapolis
An email when it’s time to start seeds, transplant, and sow — timed to Annapolis’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Annapolis Neck · 4 km
- Parole · 4 km
- Arnold · 8 km
- Lake Shore · 13 km
- Severna Park · 14 km
- Crofton · 16 km
- Odenton · 19 km
- Bowie · 20 km
Frost dates recorded at ANNAPOLIS POLICE BRKS, 2 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 Annapolis, MD — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00180193. Retrieved from https://blissgarden.com/maryland/annapolis.