Black Mushroom Location
The Black Mushroom is a reagent for the Staff of Herding which grants you access to the secret level Whimsyshire.
This item is found in the Cathedral Level 1 in Act I. It doesn’t always spawn but if you want to farm for it, take the Waypoint to Cathedral Level 1. Simply explore that level, rinse and repeat.
Other Reagents Needed for the Staff of Herding
Players must assemble the five ingredients and the Staff of Herding plan to enter the level.
- Black Mushroom — Found rarely in a room on Cathedral level one, in early Act One.
- Leoric’s Shinbone — Found rarely in the fireplace in Leoric’s Manor, in late Act One.
- (Leoric’s Shinbone is *not* present or required in the Diablo 3 console.)
- To farm for this select Quest number 9 “The Imprisoned Angel” in the Change Quest menu when you log in. Take the Waypoint to Leoric’s Manor. You will have two rooms to fight from the back of the manor to reach the room with the fireplace in.
- Wirt’s Bell — An Act II vendor (Squirt) sells it for 100,000 gold on her Potions and Dyes tab.
- Liquid Rainbow — Spawns in the Mysterious Cave in the Mysterious Chest in the Oasis, Act 2. Save Zaven the Alchemist and he will open the entrance to the cave. The chest is located on level one.
- (Liquid Rainbow is *not* present or required in the Diablo 3 console.)
- Gibbering Gemstone — Random drop from Chiltara in the Caverns of Frost, Level 2, Act 3. It’s in the Fields of Slaughter. If you get Ice Caverns exit out try again. Chiltara is a Superunique with a low spawn chance.
- Plan: Staff of Herding — To teach the recipe to Haedrig. Drops randomly from Izual, Act 4.
Players used to be able to upgrade the staff to the Nightmarish Staff of Herding, Hellish Staff of Herding, or Infernal Staff of Herding via Gorell the Quartermaster, an NPC merchant found in the town section of Bastion’s Keep.
Black Mushroom Patch. Find this an pick. 
Picked!
