I am interested to know if anyone who performs this on their trees has been using tiles in the colander. If so, what results have you had?
I feel that the tile would have to be the right size and shape to fit the colanders and be low enough that it would still allow the roots to escape the colander holes. Or a CD would probably work better....

I have purchased some seedlings from Neil a couple of weeks ago and I will be purchasing more over the coming weeks.
Has anyone done any experiments in regard to this technique that they could show us?
I would love to see examples of seedlings at the same stage in growth with one planted in the ground with a colander and a tile/CD with the roots trimmed every couple of years compared to a seedling that has been in a pot with the roots trained each year.
My main goal would be to grow as thick a trunk as possible in the shortest possible time whilst developing the nebari.
If there are no examples around I may just have to start it here.....

I think I would need quite a few seedlings to carry out the experiment. I am planning on purchasing a lot of figs in the coming weeks so it might have to be carried out on these...
Here is the colander thread that was started by Ray https://www.ausbonsai.com.au/forum/view ... =collander
And here is the thread started by Steven on using root modifiers https://www.ausbonsai.com.au/forum/view ... f=7&t=1307