It looks like a couple of Aeonium heads I started this fall have turned into inflorescences. As soon as I started seeing so much stem, I got suspicious. It's not the first time this has happened. Sort of a bummer to see a successful propagation terminate, but it looks like it'll be a good show. Thought I would share.
First up is Aeonium "Cyclops", many buds now appearing at the end. For comparison, the third picture shows an inflorescence from the garden that's a bit further ahead. Eventually it turns into the usual yellow cone of flowers.
I admit I've entertained thoughts of sowing seeds from this pair, see what comes out of that. Ideally they would be giant and purple like Cyclops but ultra branchy like the green one (mother plant has about 50 heads). But let's not get ahead of ourselves.
Easy is very good. Another plant here that recently started flowering unexpectedly was a silver Dyckia, maybe I'll try that too (they're supposed to be self-fertile, and my other Dyckia was). The biggest succulents I've grown from seed (3yo) are still in 3.5" pots... every time I look at them, I remind myself to be patient. Patience is not a virtue I possess in great abundance.
Annie, nothing happened after the flower? Some kinds of Aeoniums don't get very big before they flower and die. Maybe you just picked one that doesn't branch? The last two times I started an Aeonium cutting and it went to flower, I chopped off the flower stalk right after the show and new branches sprouted at the stump, so I'm not giving up hope on these plants. My main concern at this point is keeping the bugs out of the picture. Potted Aeoniums in flower are the ultimate bug magnets, and not just the furry buzzing kind. Fortunately the ants aren't that active right now.
Of course I should have foreseen this... Doh! Both plants ended up falling over in the wind and breaking their heads off. We get these freak wind events in winter. Moral of the story: anchor flowering Aeoniums in something heavy and give them better wind protection.
The head on the right (closeup in pic 2) belongs to the purple plant. It will probably continue to do its thing. The second plant's head is inside (as a "cut flower", without water) and all the buds have opened up in there.