I forced my plants to reveal their sex, by putting them on 10 hour of light and 14 without. I think yours may be too tiny to sex right now, mine were about 7 weeks old when they started to show. I also had to use a magnifying glass to make sure they were female and not male, and now that they are big enough you can see them yourself. I also had tall spindly plants, I put a fan on them for a few hours almost every day and that helped them to stand better and to develop thicker stems (all advice from growers on here). http://boards.cannabis.com/plant-pro...ml#post1991928 I also planted my very thin plants into 24 oz Pepsi bottles (the kind you buy in 6 packs) and planted them up past the first set of leaves. Those are doing well. I figured the bottles were thin enough to give them plenty of support. I put only an inch or so of dirt in the bottle, placed the plant then filled it up to a healthy set of leaves. My one mistake - not putting a drain hole in the bottom before planting. The water does evaporate as fast out of the Pepsi bottle, but I just watered them a lot less than the other plants in peat pots (they get moldy) and 4" plastic pots. I also started using CFL Grow lights to help them be less thin and spindly, which I purchased from here Compact Fluorescent CFL Grow Light Bulbs: Express Light Bulbs . I now have the plants back on 24 hours of light to return to a vegetative state. Good Luck and Happy Growing!