Mystery Solved

This is my new mystery plant - for a while I assumed that it was brown-eyed susan - becuase I did actually plant some in the vicinity of this one - however, my new guess is that it is Mondara and I have finally got my beebalm after much trying and ending up with lemon balm. It is definately a mint with its nice square stem and slightly fragrant leaves - and so hopefully the flowers will open soon for final identification.