Minecraft wiki entry for Dirt, associated text: In Java Edition, another way to obtain renewable dirt makes use of moss blocks. Since large spruce trees can convert moss blocks into podzol, and moss can be grown on renewable stone (generated with water and lava), dirt can be renewably created as long as there is access to water, lava, moss, spruce saplings and bone meal. Azalea can also convert moss blocks into rooted dirt when grown into a tree, but since only one block is converted at a time, it is much less efficient than large spruce trees.