>Thanks for the link to the Florida geo site. The data here is not of >much value, as it is about tropical plants of various species >decomposing. Peat offered for sale for horticultural or fish use is >almost exclusively Sphagnum moss, which is formed in large yearly >layers, due to seasonal variation. Huh? I gave the link to Part I which is entitled: NATURE, ORIGIN, KINDS, AND COMPOSITION OF PEATS IN GENERAL, and in fact covers just that, including much info on sphagnum peats. Part II covers Florida peats. An excellent reference - check it out. - -Doug Brown debrown@kodak.com