So, some evil Kryptonian dickweeds have escaped from the Phantom Zone, and they've got a cache of forbidden Kryptonian super-weapons.
Well, I guess we now know the secret origin of those mysterious Gallsberry plants that taste exactly like chicken from Chew!!
Bonus: Supergirl no longer has to worry about cephalopods!!
From Action Comics #297 & 298 (1963), as reprinted in Super Dc Giant #S-24 (1971)