Compressed mixtures of blends of coconut coir pith and selected horticulturally acceptable non-coir/non-peat materials such as composted yard waste composted bark composted manure sand peat humus composted agricultural waste composted animal byproducts treated sewage sludge animal and/or vegetable-based landfill waste wood and lignocellulose derivatives vermiculite perlite, glass beads foamed plastics, and mixtures thereof are prepared in a manner such that, upon decompression, a total volume of decompressed coir pith and decompressed non-coir/non-peat material is produced which exceeds the sum of the initial volumes of coconut coir pith and non-coir/non-peat material in the blends.
