Nup, the ground is quiet good, the tree was infected however and couldn't be saved. we had to cut it out and burn it to stop the virus affecting other trees. (we actually did get someone out to give us advice)
I am a fairly good gardener however and the rest of the garden is quiet fruitful.
We have the most fantastic olive tree which has 1000's of olive.
Funny storey, just the other day a neighbor asked for a branch to give to a friend he'd annoyed no end. He wanted to clear the air and thought he'd start with an olive branch