
After giving a friend some cuttings of a spectacularly smelling scented geranium, Pelargonium 'Mabel Grey', and telling him the easiest way to root the babies would be to simply stick them in water and wait for the magic to happen, I found this email in my inbox:
hey my geranium isn't growing any roots. i put it in water and have been monitoring the plant health and changing the water but nothing's happening except some yellowing of the leaves. what's the deal?
I tried to make it all simple and breezy, but now I have a confused friend who doesn't capitalize. So I'll break it down and let everybody know what the "deal" is.
Some plants root super easily, and scented geraniums (really pelargoniums) are in this group. So are Coleus, Plectranthus (Swedish Ivy), and the ultra-dramatic Brugmansia (Angel's Trumpet). With these plants, it is enough to stick fresh cuttings in a glass of clean water - you can add a pinch of sugar for its nutitional and antibacterial qualities - and kick back, letting nature take over. It is important to change the water every few days, and to make sure there are no leaves under the water line - they'll get slimy and rotten and smelly and muck up the whole thing.
That's it. That's all you have to do-
Except wait.
Rooting takes a while... have patience. Yes, some of the lower leaves will yellow - don't panic! This is normal. The cutting is, after all, in a stressful situation - it is trying desperately to LIVE! Unfortunately, not all of the cuttings will make it - 60-70% success is what you can expect in the best circumstances. It isn't a reflection on your skills as a water-rooter.
So once your cuttings have a nice little spagetti-like cluster of roots, you can take them out of the water and pot them up in a snazzy little container full of nice, fluffy potting soil. Don't use straight compost - too dense, won't drain water - and (although I know NOBODY would do this) please, don't use dirt from your yard. That's just craziness.
Nothing is more satifying that propagating your own plants - it makes you feel like Mother Nature herself, with thumbs so green you could hitchhike a butterfly!