With the disappearance of Dusty Divot and Wailing Woods, finding mushrooms on the map has become much more difficult. However, with Fortnite Season X Week 3 upon us and with it the next challenge in the Worlds Collide mission, that's exactly what we have to do.
Mushrooms typically appear in areas that are heavily shaded — where trees are particularly large or numerous to the point of preventing sunlight from reaching the ground properly.
Haunted Hills and Lonely Lodge are prime locations, while Shifty Shafts is also a very good place to harvest. Contrary to what one might think, the area surrounding Junk Junction may also offer up mushrooms.
Happy hunting!