The horizontal planting is suited for heavy clay soils. Planting with 100 x 100 cm spacing (or 10,000 plants/hectare) is typical, however,
less spacing (100 x 80 cm or 80 x 80 cm) and larger spacing (100 x 120 cm or 120 x 120 cm) are
recommended for infertile sandy soil and fertile soil, respectively. At maturity stage with 8-
18 months after planting, the plants with two big branches (i.e. dichotomous branching) or
three branches (i.e. trichotomous branching) are 1-5 m in height with the starchaccumulating
roots extending radially 1 m into the soil