My plant is about 17" tall now and it looks very good. How do i know if its male or female? My stems and stalk are reddish purple and the leaves are a decent size. I just dont know when to get it ready for flowering.
Use these charts to check if it's male or female. If it's 17" tall, put it in to flower, 12/12 light cycle for 8-10 weeks.
Hopefully you don't have any "balls" on your plant.