When to plant in Blacksburg, VA
USDA Zone 7aEverything below — frost dates, hardiness zone, and what to plant when in Blacksburg, Virginia — is derived from the closest NOAA station with complete climate normals.
In zone 7a, Blacksburg supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average first fall frost in Blacksburg is now 10 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
BLACKSBURG NWSO · 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 Blacksburg’s own odds, recorded at BLACKSBURG NWSO.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 24 | May 6 | Apr 21 | Sep 26 | Oct 8 | Oct 21 |
| 32°F | May 14 | Apr 24 | Apr 11 | Oct 6 | Oct 19 | Nov 1 |
| 28°F | Apr 27 | Apr 11 | Mar 28 | Oct 15 | Oct 29 | Nov 8 |
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 Blacksburg, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Blacksburg planting FAQ
When is the last spring frost in Blacksburg, VA?
On average, the last spring frost in Blacksburg is around April 24 (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 Blacksburg, VA?
In Blacksburg, the first 32°F freeze of fall lands around October 19 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Blacksburg in?
Blacksburg is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Blacksburg?
Blacksburg has about 178 frost-free days — a moderate growing season — between the average last spring frost (April 24) and first fall frost (October 19).
When should I plant tomatoes in Blacksburg?
For Blacksburg, sow tomatoes indoors about February 27–March 13 and move the seedlings out around May 1, after the last spring frost.
Never miss a window in Blacksburg
An email when it’s time to start seeds, transplant, and sow — timed to Blacksburg’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Christiansburg · 10 km
- Radford · 17 km
- Salem · 33 km
- Cave Spring · 37 km
- Roanoke · 42 km
- Hollins · 44 km
- Martinsville · 79 km
- Mount Airy · 82 km
Frost dates recorded at BLACKSBURG NWSO, 3 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 Blacksburg, VA — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00440766. Retrieved from https://blissgarden.com/virginia/blacksburg.