Mario and Luigi: Dream Team -- Part 19: Mushrise Manual Labor Board

Mario and Luigi have retrieved the Driftwood Jellyfish Sheets from the Fly Guy Rs after sneaking up on them while Dreambert and Starlow created a diversion. There are three more parts of the Ultibed to collect, so let's go to Mushrise Park, which is close by. There are only a few areas the bros haven't visited yet. Go south twice from the park entrance. Boss Brickle is pacing around, wondering what to do. He decides to ask the bros, but doesn't know where they are. Approach him. He wants the bros to help him, but they're looking for the Mushrise Tree Board. He knows where it is, but tell them only once they help him. The bros agree and he says he wants them to clear rocks. He says his staff wasn't equipped to handle the monsters that showed up when the castle in the sky appeared. He shows them on the map where the rocks are. He recommends starting on the south end. The bros should talk to him when they're done.

Go south and try to go east. Some Brocks say they've cleared the tree that blocked the path, but there are monsters where they should clear rocks. The bros explain they're there to clear the rocks and the Brocks leave. There are 35 rocks to clear in total. In this area, there are Fly Guy Rs. There's a rotating tube in the center of the area. Stand on the circle on the ledge to the south, then Side Drill into the tube. Fire with (B) at the rocks to destroy them. This can be used to destroy rocks you can't reach with the tube. On the north side are some cylindrical ledges. The bridge on one of them leads to a pillow. On the map, you can see how many rocks left to clear in that area. Move on when you finish.
From here, go west, north twice, then east. Talk to the Brock near the bridge to reach the rocks. There are three rocks you can't clear immediately, so go south.

Here, there's a complicated system of tubes for destroying rock. You can reach the tubes from the south. The tube system is a little tricky, so make sure everything is lined up for when you want to transfer tubes. Use the hammer platform to break the rocks to the north. Return using the hammer platform. When you're done destroying rocks, return to Boss Brickle. Follow him towards the Maintenance Hut. Follow him to the south from there. This is where they keep the Mushrise Tree Board, or so Boss Brickle says. He doesn't know for sure. He found it while tilling the soil when the park was still a muddy field. Dreambert confirms its identity. Dreambert mentions that the Mushrise Tree grows in this area, but the board is the only thing remaining when the tree decays.

There's a camera block two areas south of the entrance. There's one more pillow in the park. Go east of the camera block to find it.