You didnt say what strain it was. They have different flowering times. Some as short as six weeks, some as long as 15 weeks. Add your veg time(also different according to strain and how big you want your plant) to the flower time and you will have your answer. Also, you didnt say what kind of system you are using, what kind of lights, what kind of nutes. How could you expect anyone to answer if you dodnt give any info?

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Keep your grow to youself, or everyone will get to see it on the news.