and you can eat the clippings
What is your soil like? I might have to try that.
My soil ranges from tree to tree, but this one has about 30% organic, and a lot of lava rock, about 60%. When the days get into the 80's, I can water every other day. In the summer, it needs at least one watering a day, and only morning sun. I didn't completely bare root it, since I did take roots off, and didn't want to stress it out too much. You can still see some of the nursery soil on the base.
I've managed to keep rosemary fairly well in a flower bed before, but I've never tried to keep it in a pot, or as a bonsai. I'm cautiously optimistic.