Glowing Mushroom biome

Mushroom biomes are areas where Glowing Mushrooms are findable.

Surface Mushroom Biome
A surface level mushroom biome can be created by planting mushroom seeds on mud. If enough continuous blocks are created the background and music will indicate a transformation into the surface mushroom biome. No enemies appear to spawn here pre-hardmode, except during a blood moon which seems to use the hardmode spawns.

Underground Mushroom Biome
Underground mushroom biomes are found anywhere below 0 depth, including in pockets deep in the underworld. Enemies here are black slimes, mother slimes, and cave bats. Similar to the surface biome during the blood moon and in hardmode more difficult enemies spawn which are unique to the mushroom biome.