I've been thinking of transplanting some of my hybrid Pings into decorative glazed ceramic containers.
Now, there are no drainage holes in any of these containers and I happen grow all my Pings in a airy and rocky mix of aquatic plant soil, perlite and tiny lava stones. Water passes right thru this mix and evaporates quickly as well; which seems very inefficient to me.
Now my question is: Do you think it would be safe (and healthy) for the Pings to grow in the same stony soil in undrained containers if the water level is carefully maintained and monitored?
My thinking is that these pings have such small and shallow root systems that it isn't necessary for them to be on the tray system. A more shallow undrained container might be sufficient and actually more “economical”, water-wise...