Guide Step
Quick Answer: plant them in the first part of the basement
If you are stuck and cannot plant chanterelles because the lower basement is blocked, stop. You do not need to open it. This is not our reading - it is the developer's. Benjamin at Pine Creek Games, posting with the developer tag on Steam on 12 November 2025, answered it directly: "It's Granite and you get that later in the game. So start planting the mushrooms in the first part of the basement, then later you can unlock the second part when further into the game." So the sequence is: plant chanterelles in the part of the basement you already have access to, and carry on with the story. The blocked lower level opens much later, once you have Granite, and it has nothing to do with completing this objective.
- Plant chanterelles in the FIRST part of the basement - the part already open to you.
- The lower/overgrown basement needs Granite, which arrives much later in the game.
- Where to plant chanterelles was confirmed by a tagged Pine Creek Games developer on Steam, 12 November 2025.
- Being unable to open the lower level is not a blocker for this objective.