Ofm, sad to say that is the 'now' photo. I am just thankful that I found it before it was totally gone.
Are all of your different pachyclados growing in the same area? And have you had them for the same amount of time?
Petrosedum forsterianum does get the bare almost woody like stems as the plant ages. The bottom leaves fall away. I think it is a cool plant because it almost has the appearance of a bonzai plant.
