The title is misleading since the plant creatures are actually prehistoric plants of Earth.
Buzz: Leapin' flames! There goes another of Plantman's projects up in smoke!
Buzz: You seedy scoundrel, don't you ever give up?
Plantman: Never! It's like they say, there's no rest for the wicked!
Plantman: I'll really have to turn on the heat now. Fire away! (the giant snapdragon plant starts breathing fire)
Buzz: There's only one thing to do in a situation like this, fight fire with fire.
Frankenstein Jr.: Right, Buzz! (uses his flamethrower and starts to overpower the plant)
Plantman: Gads! My plan is starting to backfire!
Buzz: (talking to Frankenstein Jr. through his ring) Frankie, this is Buzz and I need help. The Plantman's turned our lab into a garden of evil.
Frankenstein Jr.: Hold tight, Buzz! I'll be there in a splash!
Buzz: Yikes! The Plantman! I might have known you were at the root of this evil.
Buzz: Galloping ghosts! Frankenstein Jr.'s disappeared!
Plantman: And you're next, gallant guardian of goodness!