Mildew on Plants

#1
From what I read, poor air circulation, as well as humidity are major factors in causing fungal disease.  OK, have any of you had experiences with this?  If so, how did you recover from your problem?  Well, of course, one way to fix things is simply to circulate more air and reduce humidity.  However, though, I heard about neem oil and how it helped out.  Who has used that?
 
#2
Ive used once Neem oil and it assisted to get rid of bugs, but never did for mildew since my vegetation doesn't impacted until now. I must suggest you to use Sprinkler with a timer so that this mildew wouldn't spread more on the plants. Remove the leaves that are affected and spray the Neem oil as per the instructions offered by the manufacturer.

Post here several images so someone can advice to you for recuperating your vegetation from Mildew. I hope these things will really help for you in rapid restoration.
mildew.jpg