Don wrote:
Folks
I have two 6 year old pittospurums that are starting
to die from within.

which particular one(species)?

We lost the one at home (P undulatum) when the borers got in and slowly
pruned it back to a tall stump,

Could be drought as the local native ones all like moist gullies.

Our P revolutum haven't survived 6 years yet, so could be a end of
natural life cycle, althought they are only a bush really.