Sour OG Flowering

I say at least another 5 weeks maybe a few days extra then that . You're plant basically has just finished the stretching now its going to focus on making super big and dense cola's ! You can always make it easier to tell by getting a loupe or a portable microscope with these tools you will be better able to see the trichomes once they are mostly amber she's time to harvest ! You can find these tools at any local hydroponics store or ebay amazon all those as well .But based on what I see here in your diary you got some time to go still :) and depending if your using nutrients or not you might wanna time it out for your flush at the end of the cycle . I hope this information provided helps you on your quest for knowledge and answer's your question . -Happy Growing!