Yikes.
One of a few things:
-Virus
-Physical (including environmental) damage while that part of the plant was developing, leading to screwy DNA/ RNA replication and subsequent mutation
-Mutation from some unknown source

It's still okay to smoke; you won't turn into Aquaman (sorry )
Plants look very happy overall.
stinkyattic Reviewed by stinkyattic on . heat stress?? this plant has been like this since day 1..some leafs grow normal and some go retarted Rating: 5