I usually chop when about 15% of the trichs are amber. I've grown most of my strains long enough that I have a good idea how long they take to mature, and flush accordingly. But if you're wanting to chop at 10%-20% amber, then start flushing after all of the trichs have turned cloudy, and no later than when you begin to notice a few turning red. Again, in my opinion, best way to know is to have a few runs with a particular strain under my belt, which gives me a much better idea on my flowering time.

Hope that helps. Take care. :jointsmile:
Mr. Clandestine Reviewed by Mr. Clandestine on . At what point do you start flushing? The answer is easy, generally 1-2 weeks before harvest.. correct? but when do you start to flush based off trichome color? We know you want to harvest generally at 10-20% amber, but do you wait for 10-20% amber before beginning to flush or is that what you actually want to try to harvest at? does that make sense? Rating: 5