Stinky, when I lable my plant's I lable the pot which as you know you can't really do when your trying to root clones or start seeds, mostly because I use some kind of rooting device (I'm not to picky about which one because they all work if used right). My question is what do you use to mark the leaves? It looks like a Sharpie but they are toxic. If it is a Sharpie haqve you ever had any complications and if it ain't what kind of marker is it. That's a great idea, I've never seen anyone do this before on any kind of plant but it sure would hlep me out a lot.