Cassava bagasse and cassava skin,which are the wastes of tapioca industry, resulted into the environmental problem. In order to minimizing environment pollution, an experiment using those organic matters for soil mulching application was conduted. The objective of this experiment was to investigated the influence of selected organic mulches on soil temperature, soil moisture and pineapple (Ananas comosus) production. This experiment was conducted in pineapple plantation in province of Lampung, Indonesia, from July 2001 to September 2002. There were 5 treatments included, namely: control (no mulch), rice husk mulch, cassava bagasse mulch, cassava skin mulch, and black polyethylene film mulch, with the rate of each organic matter was 300ton/ha. The result showed that generally, organic mulching increased the average soil temperature. But during fine days, rice husk and cassava skin mulching decreased soil surface temperature, while it was increased under cassava bagasse mulching. Due to the high water loss during fine day, it was assumed that the application of rice husk mulching could not conserve soil moisture. In spite of organic matter, cassava bagasse mulching could not play role in suppressing evaporation loss. Cumulative soil moisture repletion and depletion under cassava skin mulching was the lowest. There were no significant differences in fruits weight, percentage of standard fruit size, brix and acidity of fresh fruit under all treatments.