Moved some 2020 BC seedlings from shallow pots to Anderson flats on top of mortar tubs. The tubs don’t have drain holes.
Trees were taken out of pot then tap roots were cut. All roots were combed out radially then put on the flats.
I now have 8 of them in the flats and sitting above a tub filled with soil and water. They are growing well. They should be big enough to be a pre-bonsai in 2 years. Any body interested?