Question
QUESTION: I planted two Burning Bushes last fall.  They are growing fast but I noticed white stuff on their leaves today, is that a disease or bugs?  My other shrubs around them are not affected. Do I need to spray them with something?  If so, what would that be?  Thanks!

ANSWER: Hi Pat,
Thanx for your question.  It sounds to me like your burning bush (Euonymous alatus) has powder mildew.  If the problem is severe enough, you may benefit from removing the shrubs and planting something different.  This shrub is considered invasive in many areas of the U.S.  Here is a link to control over powdery mildew.  I hope this helps.
Tom

http://www.gardenguides.com/pests/tips/powderymildew.asp

---------- FOLLOW-UP ----------

QUESTION: I forgot to tell you that the leaves that are affected are starting to curl up.  The nursery said it was probably aphids as they are really bad here now.  Without either of you being able to "see" the leaves, I know it makes it difficult to be sure.  What does aphid infestation look like?  Thanks!

Answer
Hi Pat,
Thanx for the additional information.  The Nursery is probably right if the leaves are curling.  Aphids a tiny insects that are about the size of pinheads.  They are usually green or yellow but they can be brown, black or white too.  They suck the juices out of the leaves and then excrete what is termed "honeydew" off which ants feed.  Usually, when you see aphids, you'll find ants.  Ants "herd" the aphids and protect them from predators.  But leaf curl is a symptom of aphids.  Check the undersides of the leaves and you should find them.  The best cure is a hard spray of water from the garden hose, three times a day or horticultural soap.  I try to avoid chemicals if possible.  Check the link below for pictures of aphids on Google Image.

http://images.google.com/images?hl=en&q=aphids&btnG=Search+Images&gbv=2

I hope this helps.
Tom