Harrisonburg, VA planting zone & frost dates
Harrisonburg is in USDA hardiness zone 7a. The last spring frost usually comes around April 21 and the first fall frost around October 23, for a growing season of about 182 days.
Planting calendar for Harrisonburg
Dates are counted from the average last spring frost (April 21) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Feb 24 – Mar 10 Transplant outdoors: Apr 28 – May 5 |
| Peppers | Start seeds indoors: Feb 10 – Feb 24 Transplant outdoors: May 5 – May 12 |
| Eggplant | Start seeds indoors: Feb 10 – Feb 24 Transplant outdoors: May 5 – May 12 |
| Broccoli | Start seeds indoors: Feb 10 – Feb 24 Transplant outdoors: Mar 24 – Apr 7 |
| Cabbage | Start seeds indoors: Feb 10 – Feb 24 Transplant outdoors: Mar 24 – Apr 7 |
| Onions (sets) | Plant outdoors: Mar 24 – Apr 7 |
| Peas | Sow outdoors: Mar 10 – Mar 24 |
| Spinach | Sow outdoors: Mar 10 – Mar 24 |
| Lettuce | Sow outdoors: Mar 24 – Apr 7 |
| Carrots | Sow outdoors: Mar 24 – Apr 7 |
| Potatoes | Plant outdoors: Mar 24 – Apr 7 |
| Beans | Sow outdoors: Apr 28 – May 5 |
| Sweet corn | Sow outdoors: Apr 28 – May 5 |
| Cucumbers | Sow outdoors: Apr 28 – May 5 |
| Squash & zucchini | Sow outdoors: Apr 28 – May 5 |
| Basil | Start seeds indoors: Mar 10 – Mar 24 Transplant outdoors: Apr 28 – May 5 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Aug 28 (8 weeks before the average first fall frost on Oct 23).
Useful for zone 7a gardens
- Seed starting kit with dome — to start seeds indoors before the last frost
- LED grow light for seedlings — stops leggy seedlings
- Frost cloth / plant covers — for late spring and early fall frosts
- Soil thermometer — warm-season crops need soil above 60°F
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Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Apr 9 | Apr 21 | May 7 |
| First 32°F frost in fall is before | Nov 3 | Oct 23 | Oct 9 |
How to read it: in spring there is a 10% chance of a frost after May 7, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 9. A hard freeze (28°F) usually ends around April 9.
Hardiness zone by ZIP code in Harrisonburg
- 22801 zone 7a
- 22802 zone 7a
- 22803 zone 7a
- 22807 zone 7a
Nearby cities
- Staunton zone 7a, last frost Apr 21
- Waynesboro zone 7a, last frost Apr 21
- Charlottesville zone 7b, last frost Apr 5
- Front Royal zone 7a, last frost Apr 13
- Culpeper zone 7a, last frost Apr 21
- Winchester zone 7a, last frost Apr 11
- Madison Heights zone 7b, last frost Apr 17
- Lynchburg zone 7b, last frost Apr 17
Questions
What growing zone is Harrisonburg, VA?
Harrisonburg is in USDA Plant Hardiness Zone 7a (average extreme winter low 0°F to 5°F), according to the USDA 2023 map.
When is the last frost in Harrisonburg?
The average last spring frost (32°F) in Harrisonburg is April 21. There is still a 10% chance of frost until May 7.
When can I plant tomatoes in Harrisonburg?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 28 – May 5. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Dale Enterprise, VA (USC00442208), 5.8 km (3.6 mi) from the city center, elevation 414 m, based on 26 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.