Looks like pest damage. Use a systemic insecticide. Here is one of my plants from last year. I never saw any pests, but once I applied the systemic, the deformed leaves went away.
-Joel from Southern California
Alrighty thanks! What do you use? (chemical and brand) I think that Acephate is safe correct?
I recommend Neem Concentrate from Green Light. Got a jug of it today at Lowes.
I looked at purchasing neem oil from lowes however the ingridents were 70% neem and 30% other. Was just nervous what the other 30% was and whether it was going to harm the plants.
Consequently, pure neem mixed with just water has to be shaken up between sprays...
Yeah, I've had a few twisted pitchers, probably due to a frost we had in early May.
Could be aphids as well though. No harm in spraying I suppose.