I have grown this Phrag Sedenii for I don't know how many years. I have always had some leaf tip die back (as if you hadn't already noticed) with some years worse than others. This plant was moved into S/H about a year ago. Some of the newer growths are not exhibiting salt problems (yet). I have been told that it can sometimes take well over a year for the die back problems to disappear. Can any one tell me if that is true? Thanks.