Pepper transplants were grown in trays using 6 different growing media.Trays were filled in a loose and in a compact manner with PANTOTHENIC ACID the 5 different peats and coconut coir.Measurements were made for the most important physical parameters of each single medium studying their effect on transplant development.Results indicated that compaction had had a beneficial Flower effect on the germination of the transplants and on the rate of their development.