A couple weeks ago I divided and transplanted a mature rosemary shrub to a new spot in my garden where it can get a little more sun. It was in bad shape and not a lot of roots came with it, so I also thinned out the branches. It looked good at first, but now it's turning brown. I watered it today with Root & Grow rooting hormone. Is there anything else I should do? How long do I wait before removing dead leaves and stems?