My 'ZEN-pervivum Garden' is coming along nicely. I already traced the first wave lines, now I'm waiting for more arachnoideum offspring to get the right size fror transplanting. Once all lines are traced and the rosettes have grown a bit I will fill up the spaces in between the rosettes as required to create solid lines.
In the end I decided to go for two different type of arachnoideum of more or less the same size to speed up the development of the layout. One type will be used mainly around the smaller island in the foreground the other more around the bigger island in the background. If they turn out to be too different I will later re-arrange or replace one type by offspring of the other.
The small Jovibarba on the 'solid ground' of my 'garden' is heavily producing offspring that might be ready for transplant in fall.