Throw that soil away???? Heck no! I have use and reuse the soil! The worms take care of it and I just add a little blood meal, manure, epsom, molasses, and kelp to it for the most part. I also hit it up with beneficial fungi. The plants grow fine! My grow is inside, as I said, and the carpet makes it easy to move the tubs. (Clean up is a drag, but I use a shower curtain as a drop cloth.) I sit down and use my legs to push the tubs around. (I'm 60, so don't tell me you kids can't manage moving tubs!). I may look funny, but it works! Well, there is more than one way to grow your pot. The main thing is that we grow our own! - Granny:hippy: