Players can receive mushrooms and mort myre fungus from chopping sulliusceps, but they can also receive a sulliuscep cap at a rate of 1/100, which is used in creating mushroom pies. In addition, they also yield numulite and unidentified fossils fairly commonly, making chopping sulliusceps one of the fastest ways to obtain fossils for Kudos.
Sulliusceps have a 1/16 chance per chopped mushroom to deplete.
There are six sulliusceps found throughout the Tar Swamp, indicated by the icon, but only one is able to be chopped down at any given time, while all other locations will have sulliuscep sprouts in their location. Thus, players must traverse the Tar Swamp to find the choppable sulliuscep; the choppable sulliuscep is unique to each player, thus world switching will not change its location. The spawning of the next sulliuscep happens in the same order every time, which is shown in the picture to the left.
Travelling through the swamp will require a rake to clear vines in addition to an axe. The swamp is home to dangerous Tar Monsters, who deal typeless damage, and poisonous spine mushrooms, so bringing some form of recovery and cure to poison is recommended but not necessary.
Should the sulliuscep spawn in a particularly dangerous area where the player is exposed to attacks from the tar monsters, players can kill the sulliuscep instantly by using the "Inject" option, which requires 1 proboscis and 1 fungicide spray. This forces the sulliuscep to revert back to its unchoppable sprout state (the same as if the sulliuscep was felled) and to spawn in next location, which the player must traverse through the swamp to get to.