A vine, indigenous to South and Central America generally called snail creeper, cork screw plant, caracella bean or snail plant, is part of the plant family Fabaceae. Vigna caracella is usually cultivated by gardeners as a summer digging up the roots to shop for the winter or bringing the plant indoors even though the plant is a perennial evergreen in milder climates. Alternatively, gardeners can cut back the plant to the floor if frost kills the vines. The roots will create new foliage. The vine can climb from one to two stories high in one summer.
Cut the vine again in the surface of the soil to 2 to 4″. Use a garden fork to raise the tubers in the soil. In areas with large frost, horticultural specialists suggest as your would a dahlia, managing the Vigna Caracalla root. Handling of the tubers is needed to avoid damage.
Brush off excess soil in the tubers. Lay the tubers. Place in a airy, well-ventilated area, out of sunlight, to dry for 2 to 3 months.
Place the tubers in a cardboard-box and cover using a 2 to 3-inch layer of peat moss.
Inspect the tubers. Use a knife to take off any rotted or diseased section of the tubers. Soak the tubers in water. Remove in the water and put on on a layer of newspaper or paper towels to dry for 2 to 30 days. Place in a well-ventilated area, out of sunlight. Place dry tubers in a cardboard-box, protect with peat moss and store in a cool (45 to 50 degrees Fahrenheit) and dry place until prepared for spring planting.
Mulch the the top of soil of vines left in the floor non-handled sawdust or wood-chips.