Board Thread:Plants vs. Zombies 2: It's About Time/@comment-25309891-20140826042307/@comment-4417029-20140829025755

Uselessguy wrote: Bamboom sounds more interesting than Banana Launcher.

Guess that explains the Bananah part. The Bananah and the Bamboom have merged (don't ruin the mood Shroomy05, at least Beach will have more new plants).