Blueberry

Hi Sinsemilla, Well to be at that stage you have pretty high UR, should run around 35/45% specially with those night temp.. Since you have buds on there I personally wouldnt use any chemical product. The acetic acid of vinegar can control powdery mildew. A mixture of 3 tablespoons of common apple cider vinegar, mixed with 1 gallon of water, does the job. Once you wash your plant/buds you want to let the mixture work and you need to clean away that stuff.. wash again with the mixture. Remove the most affected part with satinazed equipment and discard! Hope I've been useful to you anyhow, best of luck!