Unlike last week’s azalea, this fella is on an annual Repotting cycle. It’s been in straight akadama for the last few years, and the root system is doing very well in it.
I take my time on this tree, combing out the roots carefully, and then hosing out the soil between; repeating the steps several times until the old soil is washed out. It allows me to find and eliminate any of the roots that are growing on the bottom and are trying to get strong. “Planing” the underside of the trunk keeps it spreading out over time.