The Monster Plant is an enemy in Psychonauts that looks like a bush at first, but as Razputin Aquato gets closer, it unfurls and tries to bite him. It is only found in the Brain Tumbler Experiment in Psychonauts.
When defeating this enemy, there is really nothing to it. When it is in its bush form, it is invincible, but once it has opened up, punching or PSI Blasting this enemy will defeat it easily. The player can also set fire to this enemy by using Pyrokinesis.