When to Plant Sweet Potato in District of Columbia
Direct Sow Outdoors
Saturday, March 20, 2027
State
District of Columbia
USDA Zones
7a, 7b, 8a
Avg Last Frost
Saturday, March 20, 2027
Cities Covered
2
District of Columbia Planting Schedule by Zone
District of Columbia spans 3 zones — find yours below for the most accurate dates.
| Zone | Last Frost | Direct Sow |
|---|---|---|
| 7a | Saturday, April 10, 2027 | Saturday, April 10, 2027 |
| 7b | Monday, April 5, 2027 | Monday, April 5, 2027 |
| 8a | Saturday, March 20, 2027 | Saturday, March 20, 2027 |
Dates based on average last frost. Check your local forecast before planting.
About Sweet Potato
Companion Plants for Sweet Potato
Good Companions
Avoid Planting Near
Growing Sweet Potato in District of Columbia: Complete Guide
Sweet Potato (Ipomoea batatas) is a crop that grows best when sown directly in the garden. Depending on your zone, the right time to direct sow in District of Columbia falls between March 20, 2027 (Zone 8a) and April 10, 2027 (Zone 7a), once soil temperatures are consistently warm enough for germination.
Because District of Columbia stretches across 3 USDA hardiness zones (7a, 7b, 8a), planting windows can shift by as much as two to four weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.
With 100 days to maturity, Sweet Potato fits comfortably within District of Columbia's growing season in most zones. In the warmest parts of the state, a second planting later in the season may be possible.
Sweet Potato requires full sun (8+ hours) and moderate (reduce as harvest approaches) moisture. Check your local forecast for humidity and heat advisories that may affect timing and pest pressure.
For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of District of Columbia.
Frequently Asked Questions
When should I plant Sweet Potato in District of Columbia?
In District of Columbia, direct sow Sweet Potato outdoors around Saturday, March 20, 2027. District of Columbia spans zones 7a–8a, so gardeners in warmer zones can plant earlier.
What is the last frost date in District of Columbia?
District of Columbia spans 3 USDA zones (7a, 7b, 8a), so last frost dates vary by region. Washington (7a) sees frost until around Saturday, April 10, 2027, while Washington, Washington Navy Yard (8a) is frost-free much earlier.
How long does Sweet Potato take to grow in District of Columbia?
Sweet Potato takes about 100 days from transplant (or direct sow) to harvest. In District of Columbia's longer-season zones, a second planting in late summer may be possible.
What USDA zones does District of Columbia cover for Sweet Potato?
District of Columbia includes zones 7a, 7b, 8a. Sweet Potato grows well across all of these zones with adjusted timing — use the zone table above to find the right dates for your part of the state.
When to Plant Sweet Potato by City in District of Columbia
Dates are based on each city's USDA zone and average last frost.
| City | Zone | Last Frost | Direct Sow |
|---|---|---|---|
| Washington | 8a | Saturday, March 20, 2027 | Saturday, March 20, 2027 |
| Washington Navy Yard | 8a | Saturday, March 20, 2027 | Saturday, March 20, 2027 |