"FarmI" ask@itshall be given wrote in message
. au...
"0tterbot" wrote in message

having said all that, i read recently (and i can't remember where!) that
longstem planting is surprisingly effective for more trees than you would
think,

It was certainly featured on one of the Gardening Australia programs.
amazing really as it goes against the grain after all those years of being
told to plant at the level the plant was in the pot.

They also said it may not work for some trees.
Casuarinas sound pretty tough trees so I wouldn't worry...

See here http://en.wikipedia.org/wiki/Casuarina