I understand these plants can be cut apart with a rosette and its attached root.
Can the rosettes be cut in half, each section with a root?
How big should they be for dividing.
I bought these last year and they are finally growing.
Any site suggestions for discussions of dividing Jovibarba?
Are these ready for cutting?

Hi there Bob.
Yes your beautiful heuffelii can be divided now. Here is a link for you on how to do it. And yes, you can divide each rosette into pieces if each piece has crown and root attached. http://garden.org/ideas/view/v...
Hope you will take photos as you do the surgery. We would love to see how many you get from each of your clumps. The look healthy and ready to divide.

Hey Bob - looks good!! One thing to keep in mind is letting the cuttings dry off for a few days afterwards. Also the offsets in photo 2 and 3 look developed enough to be cut away and placed on top of soil where they may root...These ones don't all need some root attached. You would treat them like other sempervivum. Only if you are cutting a rosette into chunks does it require some root and crown stock. Good luck and show us the 'after' photos!

They may be ready for division but from what I can see there's no particular need for it. Unless you want more individual plants.

Thanks for the info.
I will cut some of them up and keep others whole so I can admire a big cluster.
Seems some clusters are open and others appear squished.
Greg, it's good to know that individual rosette offsets can start without roots.
That makes the dividing easier.
The surprise is that a rosette can be cut into sections with roots and will recreate a rosette again.
Will share Photos when I do it.
Do these plants have individual cultivar names?

Yes they all have cultivar names Bob - enjoy your experiment!