Should I harvest my plant?

Here's a pic

Yes time to harvest good guideline is 50% red hairs....how long you leave it to harvest decides how it will smoke but you need a jewel magnifier for that and you're looking for 30% cloudy trichomes (crystals) for a psychedelic high and the longer you go (beyond 50% red hairs) the more cerebral the high (body stone) this is 50% or greater trichomes under a jewelers magnifying glass

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Sativas finish in 12-14 flowering weeks. So how long has the plant been flowering? To know when to flush go to amazon and buy a Carson microbrite scope for 12.00, then start the flush when all the trichs are 75% cloudy and 25 % clear. Ckeck at night as they are outside. Flush for about 2 weeks the chop it. Cloudy is 100% thc potency, Clear gives you the cerebral high mainly as its less potent and amber is narcotic like but not as potent just a different cbn profile and it will put you to sleep. Those trichs look awful clear to me from afar.