I think my plants are suffering from growth stress they seem to be much smaller than others that I see in pics. These 3 are roughly 5 weeks old grown mostly under LED lighting but have been exposing them to sunlight when possible. I have researched that you should be able to tell sex as early as 3 weeks. I have looked closely at the area where the stem and leaves form but they all look like more leaves growing. See pics which are 3 plants. There are also brown residue in the middle with a slight odor of skunk. Any thoughts would be much appreciated.