Jason Woodrue first appears in The Atom #1 (Jun-Jul 1962). Woodrue is an exile from an interdimensional world inhabited by dryads. Calling himself the Plant Master, Woodrue uses his advanced botanical knowledge to control plant growth in an attempt to take over the world. He is defeated by the superheroic Atom. Plant Master returns to face the Atom and the Justice League. During the Infinite Crisis, Floronic Man reappears as a member of Alexander Luthor, Jr.'s Secret Society of Super Villains and takes part in the Battle of Metropolis.