Place the whole Japanese sweet potato in the soil, leaving a bit of the pointed tip protruding from the soil. Japanese sweet potatoes can grow rather long, so if the potato doesn't fit in the container, you can cut off the bottom portion, allow the exposed flesh to callous overnight and plant it with the cut, calloused .
How does purple sweet potato grow?
Sweet potatoes are typically grown from rooted slips, and purple varieties are no different. Slips are simply rooted stem cuttings of sweet potato vines, usually about 4 or 5 inches in length. Before planting, soak the roots of the slips in water for a few hours.
How long does it take to grow Japanese sweet potato?
Sweet potatoes mature in 90 to 170 days and they're extremely frost sensitive. Plant in full sun three to four weeks after the last frost when the soil has warmed. Make holes 6 inches deep and 12 inches apart. Bury slips up to the top leaves, press the soil down gently but firmly, and water well.
How long does it take for purple sweet potatoes to grow?
Planting purple sweet potatoes can be challenging, as they require a long growing season (around 120 days), and consistent, hot weather.
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