Native to Central and South America, sweet potato is one of the most important food crops in tropical and subtropical countries. Growing sweet potatoes, a tender, warm-weather vegetable, requires a long frost-free growing season to mature large, useful roots.
Factoid: More than 40% of the national supply of sweet potatoes comes from North Carolina.
Sweet potatoes are not truly potatoes, but a thick root of a tropical vine. They need full sun, well-drained soil (preferably sandy loam) and plenty of room to thrive. Sweet potatoes are not heavy feeders, but they do require a good balance of nitrogen, potassium and phosphorous. Work in a low nitrogen organic fertilizer before planting; too much nitrogen produces leafy growth at the expense of the roots. (more…)