Question
2 of my newley planted sand cherrys have hole in their leaves and burning around their leaf edges. Additionally the shrubs are droping leaves like crazy.  I water.

Answer
The Sandcherrys have similar problems as roses.  The holes in the leaves could be anything from Shot-hole caused by a fungus to japanese beetle feeding.  The burning around the margins could be either nutrient problems, drought, or even too much heat.  Can you take a picture of the plants in question and send them to me?  The pics will help me make a better recommendation.  You can send the pics to [email protected] with the subject line of allexperts so it will not get deleted.  I can probably get a closer idea as to what the problem is.  I await your pics.  Thanks.