Posted: 16/09/2012 at 16:46
The problem maybe the other well established trees on a hungry sandy soil and they are taking all the goodness and moisture out of the area
It sounds as though it is too dry-not knowing the circumstances but does it get enough water and can you practically rectify that?
A general fertilizer-growmore would do- and a mulch next spring when it starts coming back into life will help-in the meantime water and more water-I dont think by the sound of it you can over-do it
Does that help?