Nongsang Jiyao (Vol. 2)

...bundle them together and dip the root whiskers into thin mud, then sprinkle soil over the mud. Wrap the contents in straw mats or rush mats or woven reed mats, and use thick mud to seal the interior firmly. Secure them between the sides of a cart carriage, ensuring they are protected from wind and sun. Lay the tree trunks flat in the center, and cover them with grass matting. Prepare the area for planting by digging and burying manure in advance. When the trees arrive, plant them in the ground immediately according to the prescribed methods.

○ Methods for Autumn Planting: In the past, most mulberry planting was done in the spring, with the entire tree being transplanted. Spring often brings strong winds that sway the trees, and it is difficult to secure sufficient spring rain. Furthermore, the weather gradually turns hot, making it hard for the buds and leaves to withstand the conditions, so many do not survive even if they survive, they lack strength and grow slowly. If the original trunk is removed and the tree is grown again, the iron-like vitality referring to robust growth in the mulberry will flourish even more; this is the effectiveness of the di sang field-mulberry method.