Ellis White:
Hello, I have a dozen or so Casuarina Glauca (Cousin It) plants along a retainer wall. They are approx 10 years old, are fertilised once a year with Osmocote Pro for natives. As you can see in the pictures they appear to be dying off slowly. They wer all healthy, bushy and appeared in good health a couple of years ago but are withering now. The plants growing through them are Lobelia white root and a native violet which we manually pull out when it gets thick. Any thoughts please.