I too deal with mold. Probably the biggest issue...umm..I guess there's lots of biggest issues but mold will wipe out your whole garden in one day. I just recieved my tarp that I'm putting up for that reason. It's 20 by 25ft, clear and tear proof. Another thing I'm trying new this year is a shade cloth. The end of September still has hot ass days and I've read developed buds lose terpenes when temps get to high. I remember going into my garden many times on hot days and it just wreaks of dank. I imagine that's the terps saying bye bye.