When to plant in Wheaton, MD
USDA Zone 7bEverything below — frost dates, hardiness zone, and what to plant when in Wheaton, Maryland — is derived from the closest NOAA station with complete climate normals.
In zone 7b, Wheaton supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
ROCKVILLE 1 NE · 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 Wheaton’s own odds, recorded at ROCKVILLE 1 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 5 | Apr 16 | Mar 31 | Oct 12 | Oct 25 | Nov 7 |
| 32°F | Apr 15 | Apr 1 | Mar 19 | Oct 24 | Nov 6 | Nov 21 |
| 28°F | Apr 4 | Mar 22 | Mar 5 | Nov 5 | Nov 19 | Dec 6 |
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 Wheaton, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 13 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.
Wheaton planting FAQ
When is the last spring frost in Wheaton, MD?
On average, the last spring frost in Wheaton is around April 1 (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 Wheaton, MD?
The first fall frost in Wheaton typically arrives around November 6 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Wheaton in?
Wheaton 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 Wheaton?
Wheaton has about 219 frost-free days — a long growing season — between the average last spring frost (April 1) and first fall frost (November 6).
When should I plant tomatoes in Wheaton?
For Wheaton, sow tomatoes indoors about February 4–February 18 and move the seedlings out around April 8, after the last spring frost.
Never miss a window in Wheaton
An email when it’s time to start seeds, transplant, and sow — timed to Wheaton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Glenmont · 3 km
- Kemp Mill · 3 km
- Aspen Hill · 5 km
- North Bethesda · 6 km
- Colesville · 6 km
- Silver Spring · 6 km
- White Oak · 6 km
- Cloverly · 8 km
Frost dates recorded at ROCKVILLE 1 NE, 10 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 Wheaton, MD — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00187705. Retrieved from https://blissgarden.com/maryland/wheaton.