It is my belief that if you aren't dropping your temps for lights out mold/rot can set in really easily. Bud rot is definitely a concern but for me when temps rise humidity drops so generally I am not faced with this problem. Root rot however I have fell victim to several times with little warning a few leaves turn yellow in odd spots around the plant then a few days later the leaves are hanging straight down by deflated strings for stems. As far as the plant growing, finishing and producing great THC they do if you can keep them from rotting away.