Also known as a medusa euphorbia for obvious reasons. You probably know by now that I can't help but try to propagate my plants, the more difficult it is suppose to be, the more I want to try it. This is one of the euphorbias that wont come true form simple cuttings. Apparently if you cut a branch off and get it to root, the branch just keep growing and never splits.
So how to increase your stock? It is far to nice to top cut, I am not that brave. A bit of research online suggests there may be one sneaky method that works. It is a two step process, with stage one being to root one of the branches. Once rooted you cut the the top off just above the roots. You have effectively carried out a top cut and this should (fingers crossed) force the offsets you want. So I have take a few branches to try rooting them in different ways.
Now I just need to be patient, not one of my strong points. The good news is that if it works, you can start again with the top of the branch, re-rooting it for a second attempt.