Plant sweet potatoes using slips, not seeds. After frost risk passes, plant slips in loose, well-drained soil, 8–12 inches apart. Bury roots and lower stems, water well, and grow in full sun. Harvest after 90–120 days when leaves yellow.
Plant sweet potatoes using slips after the last frost in warm, well-drained soil. Bury slips 2–3 inches deep, spacing 12–18 inches apart. Water regularly, provide full sun, and harvest before first frost.
