Sweet potatoes planting calendar for USDA Zone 7a

Asheville, Winston-Salem, Roanoke, Nashville, Little Rock. Average last spring frost April 15, first fall frost October 15 — a 183-day frost-free season.

Zone fit: good

Sweet potatoes is frost-tender, so timing the outdoor transplant to the last frost matters more here than in warmer zones. Row cover buys 2 weeks of head start.

Key dates

Start seeds indoors

February 25 – March 11

Transplant outdoors

April 29 – May 20

Expected first harvest

August 14 – September 11

Windows are calculated from your zone's average frost dates. Adjust ±1 week for microclimates, elevation, and your own frost records.

Spacing and soil

Plant spacing: 12″
Row spacing: 42″
Seed depth: 4″
Soil temperature: 75–90°F
Frost tolerance: tender
Days to harvest: 100 days

Grower notes for Zone 7a

Set slips on 6–8 inch hills for better tuber shape. Cure at 85°F and 85% humidity for 7–10 days after harvest.

Plant near: beans, peas

Keep away from: squash

Other root crops for Zone 7a

Same crop, other zones

Track your own plantings

BAU Farm Intelligence turns these windows into per-field tasks — indoor seed-start reminders, transplant dates, harvest projections — using your farm's actual frost history.

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