Arrangement in boxes holding cellular compartments

In an arrangement in cornered boxes for holding cellular compartments intended for nursing plants, primarily forest tree seedlings potted in a substratum core, said boxes being defined by sidewalls, adjacent sidewalls being joined at a corner of the box, said cellular compartments having walls of a parallelepipedon configuration, the walls of said cellular compartments having inner and outer surfaces and being positioned parallel with the sidewalls of said boxes and made of paper, pasteboard, cardboard or corrugated board coated on one surface with a plastic material, the improvement comprising;

• said cellular compartments being arranged in rows inside said box;
• a plurality of strips made of a plastic which is resistant to degradation by contact with moist peat, said strips being arranged to extend along two opposite sides of each cellular compartment in a row, each of said strips forming separately a continuous length of strip from row to row of cellular compartments throughout the entire box, said strips being adhered to the walls of the cellular compartments in the rows so that adjacent strips may be pulled apart so as to successively break up every individual cellular compartment of each row to free the substratum core with the seedlings nursed therein.