i have a feeling it's some weird inside joke he and his friends are into or something but i've only seen him reference it so idk
He explained it at one point, he roleplayed in Starbound and the people he was gonna RP with decided to erp wirh plants or something
I assume by plants he meant florans but idk could've been actual plants I don't remember it that well
Tl;Dr Starbound roleplayers decided to forget plants, nix disapproved
I assumed everyone had heard, I can see how this would be confusing and weird(er) without knowing the context