For someone (agent -um-) to plant an area, as an upland field, ūma (loc ref -an), with sweet potato vines and leaves (theme).
About thirty centimeter pieces of the tenderest portion of vine and leaves are used as cuttings. Vines are planted in pairs, about 10 cm. lying in a line. Each pair is spaced about 60 cm. from the next pair in the line. Lines are about one meter apart in good soil; nearer in poorer soil.