Abstract: A wooden planter box (1) using thin fiber-reinforced cement sheet as interior panels (24, 26) which are intended to contain solid nutrients such as soil and fertilizer. This constitutes a new and totally different application for fiber-reinforced cement sheet. The panels themselves form a receptacle in such a way as to protect the supporting wooden structure which encloses them from contact with the solid nutrients contained by the planter box while absorbing water and enabling the transmission of oxygen to the roots of the plant.

Abstract: A knockdown planter box frame composed of two basic components in the form of frames and posts which may be easily releasably joined together. The frame is intended to secure non-wooden internal panels which contain solid nutrients such as soil and fertilizer. The wooden framework receives protection from direct contact with decay-causing micro-organisms in the growing medium. Panels are removable in such a way as to facilitate pruning a rootball without removal of the plant.