On March 16 I took a nice rock for the project from the sump and removed the crown of the Toadstool. Using a PVC tube that I cut in half and a couple of rubber bands I made a vase like construction on the rock where I want the Toadstool to attach.
The reason for cutting the PVC tube in half is that I can easily remove it when the toadstool has attached, just cut the rubber band and both halves fall from each other.
I used a sharp knife to cut the crown from the Toadstool and placed it in the PVC tube. Now all we can do is wait for it to attach to the rock.