The moss makes the watering system simpler by absorbing and draining very well.

It is recommended to submerge at least 1/2 of the moss ball in potable water. The submerging time could be from 5 to 15 minutes every one, two, three or even four weeks, depending on the type of plant and the temperature.  

After the kokedama is submerged, it has to drain for 20 minutes. Then it is put back onto the plate.