Ha, that's funny! I can't help but root them in water. I find that when I'm cutting these things back, I am unable to just throw the cuttings away. Compost them, ANYTHING!... but, no, I have to save them all and I put them in a glass of water on my kitchen windowsill and within what seems like minutes, they have roots!I have found it nearly impossible to root geraniums in a glass of water, but they do root readily in potting soil. same with citronella.
I run into this situation with orchids too. I have 21 at the moment, and they keep having babies. These I cant give away as folks are afraid of killing them. I have tried to explain how incredibly easy they are, just take a look at my window bays, but no one seems to listen... sigh!!!