Question
I have small brown spots all over the leaves of my "variegated red twigged dogwood" bushes.  I have no idea how to fix it or what could cause this.  I planted them in the late spring of this year and they looked great.  This started about 2 months ago.  What do I do?

Answer
Hi Traci,
Thanx for your question.  It sounds like your plants may have septoria leaf spot.  Check out the link from Iowa State and UGA for treatment.
I hope this helps.
Tom

http://www.ipm.iastate.edu/ipm/hortnews/1995/7-21-1995/leafspot.html
http://plantpath.caes.uga.edu/extension/plants/woodyornamentals/SeptoriaLeafSpot...