When you say immature, how immature? Once they get over a yr old they
can take almost Catt. light without burning.

They are over a year old. Two are in three inch pots and one is in a four inch
basket. I grow in a bark mixture.

Are you spraying them with fert? Neem oil? Physon? or other
substances? I spray all my plants every two weeks with Neem and some
of the leaves bleach out very easly while others that got the same

No.