I've had this wonderful plant called Jatropha podagrica (goutyspot, nettlespurge, tartogo, Austrailian bottle plant) for about two years. It's gone to seed a few times (none successfully sprouted) and grown like crazy since I first got it. They seem to be fairly obscure and pretty much all I know about them is that they have explosive seed pods and need a short dormancy period.
Recently mine has become much too tall for its pot, and is in danger of tipping. I want to air layer it or otherwise clone the top before I chop it, as my attempts at propogation by seed have been dismal. I have read that cutting the green part of the stem will induce branching, but the stem is only green near the top and I think I need to cut much lower than that to keep it from getting topheavy.
Does anyone know about propogating succulents by cutting/air layering? How should I root my cutting? This plant is in the Euphorbiaceae, if that helps.
Does anyone know how J. podagrica responds to cutting the non-green stem (or bark or skin or whatever?) Mine has a big scar where the top was removed at the nursery, and I was wondering if I could cut just beneath it and get it to branch from that cut.
Thanks in advance.