How to thicken Bonsai Trunk in ground

This is a process of thickening the trunk of the bonsai trees by letting them grow wild in the ground and then reshape them by pruning every 3-4 months.

[@wihenao]

What is the roll of the stones?

[@HimanshuMali]

the stones helps in directing roots to grow horizontally

[@user-fs1ke9js5s]

😄😃