Way too early to tell. Single calyxes will grow from the base of either where the branch connects to the main stem or where the leaf stem joins the branch. Look for tiny white hairs (pistils) coming out from the individual calyxes. Male flowers usually look like they have a "hooked" upper section over an inner oval structure. After a few days, the male flowers will start growing a stalk that will grow on an approximate angle of 45 degrees out from the stem, all the while adding more and more football shaped male flowers. Until the male flower start opening, your other female plants will be safe from pollination. If you go to the home page of Grow Diaries, click on the "Journal" option and when you scroll down you will find good pictures of male and female flowers. Hope this helps.... Organoman.