Had a friend look at them and he says its possibly Powdery Mildew....

Recommendations? I need them asap
rjbrittain11 Reviewed by rjbrittain11 on . White Something on Leaves! What is this stuff? its everywhere! Is it a problem and how do I fix it? http://i942.photobucket.com/albums/ad263/rjbrittain11-3/Misc/DSC_0964.jpg http://i942.photobucket.com/albums/ad263/rjbrittain11-3/Misc/DSC_0963.jpg http://i942.photobucket.com/albums/ad263/rjbrittain11-3/Misc/DSC_0965.jpg Also, what is this caused by? Im not worried about this particular leaf cause its low enough that its gonna get cut off but i don't want this to continue. Anyone guess? Rating: 5