>>1647573Nice pic m8
Of course it would work.
But you would have to experiment on how it works in your local climate.
The permeability of the soil, the layer that your intended planting occupies.
If the water leeches out of pot too quickly you could pack wet clay around its bed (tge hole in which the pot sits in) to limit the rate of water loss. Leave a few windows of pot sides uncovered.
It sounds like a great idea, but you will have to explore a few variables