In this video, I tried to complete this mini game only with shrooms. Of course, I needed to use coffee bean to be able to use shrooms in daytime.
By the way, you can check my playlists that include gameplay videos for each mini game and each hidden mini game if you wish.
Here is the link for the mini game playlist: • Plants Vs. Zombies: Mini Games
Here is the link for the hidden mini game (and more) playlist: • Plants Vs. Zombies: Limbo Page