The Unearthly Plant Creatures Plant Man thaws the last three prehistoric plants (the Carnivorous Chewer, the Creeping Crusher and the Fire-Breathing Snapdragon) from a glacier and then sprays them with his Obedience Ray in a plot to eliminate Buzz and Frankenstein Jr. Details Casts Videos Galleries Posters Season Lists Title The Unearthly Plant Creatures Genres Animation Comedy Release Date 1966-10-22 Episode Runtime 00 Hours 00 Minutes Season Number 1 Episode Number 20 Production Companies Unknown John Stephenson... ... Don Messick... ... Paul Frees... ... Ted Cassidy... ... Hal Smith... ... Dick Beals... ... Frankenstein Jr. and the Impossibles (Opening) (Opening Credits) Frankenstein Jr and the Impossibles (Opening Credits) Original Size (2000x1124) Original Size (1280x720) Original Size (1280x720) Original Size (1007x1416) Original Size (500x750) Original Size (500x750) Original Size (500x750) Original Size (680x1000) Original Size (680x1000) Original Size (680x1000) Season 1 54 Episode(s) 1966-09-10