depends on your lighting. a 400 watt HPS 10-14 days a 600 watt HPS 8-10 days, a 1000 watt Hps, 1 week. Depending on how you want the high to be, you could take longer for a more narcotic high, but these are probably the optimal times. Hard to tell from pictures. You need to get a high powered magnifying glass and look at the tricromes, when 3/4 of them are amber, thats the ideal time to harvest.