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Before harvest you should look for swollen calyx's, which seems like they are about there, pistils curling, and most importantly the trichomes. You can use a jewlers loupe or electronic microscope and check them. The more amber your trichomes, the more narcotic effect as the THC turns into CBN. The plant is at its' most potent when the trichomes are cloudy. I like no more than 10% amber, but that is only a personal preference... now its all on how you like your smoke. Good luck on your harvest!!
Hi @Zz666! Pistils can be a clue, if you noticed that new pistils have stopped appearing and old pistils have almost all turned red/brown and curly, but the best way to ensure it's the right time is to look at the trichomes with a magnifier/microscope. Clear/Transparent/Thin trichomes mean it's too soon, Milky/Cloudy/Fat trichomes mean the harvest window is open, Amber trichomes mean the harvest window is ending, and THC is degrading (less THC, more CBD/CBN). Looking at your last pictures, I think you're 5-10 days away from harvest plant/strain. You should probably be flushing already, but the microscope/magnifier will tell better than me. As long as most of the trichomes have turned from clear and thin to fat and milky you know the 'harvest window' is open, even if you don't see any amber. Harvesting too soon (too many clear trichs) will result in a uplifting/energetic effect but you will lose some terpenes & oil potential. Waiting longer (too many amber trichs) will result in a heavy stone/couchlocking effect. Hand-held microscopes can be found for a few dollars on the internet or at your local growshop. Hope this will help, let me know in the comments section if you need any further information, & happy growing! 👊
Zz666
