Whilst it looks like it is flowering, it also looks like it is killing the rest of the 'tree'. Although we have ridiculously shit soil in our garden as most things die (aside from the hardiest little shrubs). That said, this thing has generally done alright since we planted it.
There's one growing either side (is it two trees or one)? The right hand side/tree seems to have the bigger flower and also seems to be dying more than the other.

