I felt…by the looks of the upper roots a tree with more mature roots than a sapling was used…for a neagari project. By the looks of the lower section of roots. The uniqueness intrigues me to be honest. I have a trident whip almost an inch thick which was ground grown I purchased for this project. Thinking they surely used something which had roots for them to be spaced as they were in the photo.
Any suggestions or tips of how one handles a trident for such a long period…assuming to use flexible drainage pipe to put movement into the roots. (Tip from a friend) but should one wire into a training pot…so eventually those fine roots in years to come…might be root pruned.
Will try to add photo later. It’s not loading. So be patient with me please.