Ready to chop before official flowering time

Plants can not and do not read instructions on packets, they are individual, unique organic beings that will do whatever their individual genetics has in store for them. The information breeders give are intended as a guide, they are not hard and fast rules. Plants can be ready anywhere from 2 weeks early to 6 weeks late, but usually 2-3 weeks later than stated is most common, especially with auto flowering plants, which are generally waaaaay under estimated. After looking at your diary, I would say your plants still have another 2-3 weeks to go from when the pictures were taken, maybe even 4. Harvest them when there are about 90-95% brown pistils is my suggestion. This will give you flowers with peak THC and peak terpenes too. Leaving the flowers until the pistils are all brown will give you buds with lowered THC and elevated levels of CBD and CBN, which causes a more heavy and sleepy body stone as compared to earlier harvested flowers which will give you a more clear, mind bending head high. So, really it comes down to which sort of effect you prefer, sleepy body stone or mind bending head high. Let you preference guide your harvest timing. Judging flower maturity based solely on trichome colour has many traps and is not a reliable method in my opinion. Some plants will never get amber trichomes, meaning people are harvesting near dead plants while waiting for the mythical "30% amber", and some strains will have 75% amber trichomes after only 4 weeks of flowering and harvesting at 4 weeks would be very disappointing. For these reason, I believe anyone relying entirely on judging harvest timing based on trichome colour alone is not fully understanding how cannabis plants function. Pistil colour will more truly indicate plant health and it is plant health that determines trichome composition, not trichome colour on its own. Hope this helps,............ Organoman.