Weaknesses Wood Flaw: The energy is ineffective against wood. Items made of wood cannot be lifted or broken by energy from the ring nor can barriers of emerald energy stop projectiles crafted from wood. By extension, things made of plant-matter could potentially disrupt his power and were not affected by the ring's power as much as other substances were (so if he fired a blast at, say, a giant mutant Venus fly trap, the blast wouldn't be quite as effective if he'd fired the exact same beam at a human being or a brick wall). Apparently, this vulnerability to wood was because the green flame was an incarnation of “green, growing things” and thus could not be turned against them.
