Posted: 17/07/2015 at 20:42
As nut says, we really need to know which one you have rosemary.
In general they need neutral soil and do not do well in clay as they require good drainage. They are also deep rooted and don't tend to do very well in containers. I have two Daphne Odora aureomarginata bought from the same supplier at the same time. One is doing well but the other hasn't really grown (just like yours) so my conclusion is that they are a bit of a finicky plant at the best of times.