When to plant in Warrenton, VA
USDA Zone 7aEverything below — frost dates, hardiness zone, and what to plant when in Warrenton, Virginia — is derived from the closest NOAA station with complete climate normals.
Zone 7a means many perennials and even some tender shrubs overwinter in Warrenton, while your frost dates still decide when annuals go out.
Frost probability
WARRENTON 3 SE · 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 Warrenton’s own odds, recorded at WARRENTON 3 SE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 10 | Apr 22 | Apr 7 | Oct 8 | Oct 21 | Nov 2 |
| 32°F | Apr 28 | Apr 9 | Mar 26 | Oct 18 | Nov 1 | Nov 14 |
| 28°F | Apr 11 | Mar 29 | Mar 13 | Nov 1 | Nov 14 | Dec 1 |
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 Warrenton, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 32 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.
Warrenton planting FAQ
When is the last spring frost in Warrenton, VA?
Warrenton's average last spring frost falls near April 9 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Warrenton, VA?
In Warrenton, the first 32°F freeze of fall lands around November 1 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Warrenton in?
Warrenton 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 Warrenton?
There are roughly 206 frost-free days in Warrenton (a moderate growing season), running from the average last frost around April 9 to the first fall frost near November 1.
When should I plant tomatoes in Warrenton?
In Warrenton, start tomato seeds indoors around February 12–February 26, then transplant seedlings outdoors around April 16 once the danger of frost has passed.
Never miss a window in Warrenton
An email when it’s time to start seeds, transplant, and sow — timed to Warrenton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- New Baltimore · 7 km
- Gainesville · 16 km
- Linton Hall · 20 km
- Bull Run · 25 km
- Sudley · 27 km
- Manassas · 27 km
- Buckhall · 30 km
- Stone Ridge · 31 km
Frost dates recorded at WARRENTON 3 SE, 5 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 Warrenton, VA — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00448888. Retrieved from https://blissgarden.com/virginia/warrenton.