is hard to come by.
I did find that by using Neem meal, rosemary, high ph water and hydrogen peroxide that I could get control of that stuff, but it is a trial and error process.
But you really have to be there every day, until you have your routine established.
The reward becomes a more consistent product, and if, like me, you don't really have anyone else to count on, also that you no longer have to rely on the vagaries of people and the market.
But there is nothing like working hard on it for a few months and then opening your tent to how pretty it is - almost looked like it snowed - only to finally realize you are looking at powdery mildew.
DAMN IT!!! 
It was hard, but I saw that as a learning opportunity, and took it. A bit costly, but good, I think.
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