Hi,
Thanks for answers.
@Xeramtheum Crystals are not firmly attached, no spider web, just crystals along the nerves of the leaf. There are no new leaves for some time now, so I have changed the soil and the place to see if this will make the change.
I've clean the leaves with a damp washcloth and they look on now but I would really like to find why this happens.
@Faridat maybe, but do you know why this happens?
@WillC no spider mites, I have encounter them before. This looks like a physiological issue and would really like to find out why this happened.
Thanks,
