A plant nutrition composition including long organic fibers having nitrogen, phosphorus and potassium available for plants, in combination with organic substratum providing pH balancing in the range of about 6.0 to about 7.0. The long fibers may be the end product of slow, heat-agitated anaerobic digestion of manure. Combined with the fibers are substratum such as pine bark composted for a duration in the range of between about 9 months and about 12 months.