Minecraft wiki entry for Podzol, associated text: Podzol replaces grass blocks, dirt, mycelium, coarse dirt, rooted dirt and moss block‌[Java Edition only][1] around a large spruce tree when it is grown from 4 saplings arranged in a square. The pattern of the podzol reaches at most 6 blocks in the eastern and southern (positive X and Z) directions, and 5 blocks in the western and northern directions.