This she oak had these weird spirals on the top of the tree - this one which was huge (like 10cm) and a much smaller one (4cm). What has caused these? Is this an insect thing or just a weird growth, or is this what the new growth looks like? Never seen anything like it before!
that's fine natureguy. I had a look at the canberra website but no one has photographed something like this. Its put a lot of energy into it which is why the tree looks stunted to me.