Question
I have 7 of these plants as shrubs.  The leaves are turning splotchy yellow.  I live in Central Florida zone 9.  Please help.  
Thank You,

Velma

Answer
There could be several reasons for this symptom.  If the plants were transplanted this year, I would say they are experiencing transplanting shock and probably will drop some of the leaves.  As long as they dont drop more than 50% they should be OK.  Make sure they are watered during dry periods and add a light dose of shrub fertilizer.  If you think there is a disease involved, please send a picture or two and that will help me make a better informed diagnosis.  Good Luck.