Minecraft wiki entry for Dirt_(disambiguation), associated text: Grass Block, dirt with a grassy texture on top of it
Coarse Dirt, a variant made from dirt and gravel
Podzol, a variant that spawns abundantly in old growth taiga
Mycelium, a rare variant that has gray layer covering its surface
Dirt Path, a block that has a path above dirt
Farmland, tilled dirt that can be hydrated
Rooted Dirt, dirt that generates in the lush caves.