While I could not take, it anymore and just had to see what is going on down there so I took a core sample today. The SFG bed is 8” deep so I cut a piece of 3” drainpipe 8” long and drove it into the bed. I then sliced the drainpipe length wise to free the core. I was not surprised when the top portion just fell apart. I was surprised though when the bottom portion had a smeared surface. It had a good percentage of organic material but there seemed to be a material that was like plain old garden soil. Could it be worm casings?
I broke up part of the bottom portion just to look-see. There were several wormholes that did not show up on photos but they were active. I still cannot believe that they could make that much casing in a year’s time.
This is a close up of the bottom portion of the core and it almost looks like soil blocks. Does that mean that through time the beds will fill up with worm casings? As usual, all comments are welcome.