Idk, I am a firm believer that plants are done when they buds look done. Don't mistake this with the "I want to smoke this plant so bad, yeah its done" thought that every grower gets at some point. That doesnt look done. I see a lot of white pistols still, actually mainly all whites - it looks to me like that bad girl has about 3-4 weeks left. Id say after 2 weeks keep and eye on it and watch for an amber coating starting to color the top kola. Once the top kola is amber shaded the rest of the plant will be milky white trics - you can either leave it a day or so to turn the entire plant highly amber tric % or cut it right then and at the "idealistic" range. I always let my plants amber out. People tell me "that lowers the THC content by 3%!" cool, tell that to me and my girl when we rip a fat ass bong of this shit and time warp watching animal planet for hours on end. PS the "THC" is lost but replaced by CBCs which are a more sedative high rather than cloudy whites that give you a "smoke and go out" feeling.