hey tnelz....what kind of work castings are those? i see the side of the npk on it, and it seems to say 1-0- and i cant see the last number...just curious because the castings i use are 1-1-1
but yes tnelz, if your look into university agrigultural papers on soil, and soiless, basiclly anytime a soiless mix has more than 20% organic amendments added to it(20% of the total mix), it can no longer be called soiless, because it is now a soil ;)..i read a lot of university study papers, i enjoy gardening and learning