I posted this in the Australian cornucopia section but I've had no response. I live south of Perth and I'm having troubles with my fuerte avocado. It seems to be growing quite well but just as new shoots and leaves start to form all the old leaves start to brown and fall off. After a few weeks it looks ok again as the new growth thickens up but is it normal for them to loose all thier leaves before a new growth flush? i've put some trace elements around it but it doesnt seem to be doing anything. Is this normal avocado behaviour?