Homegrown Hydroponics - Sexing Plants

Females show the first sign that a plant is turning female, the hairs are a translucent white and usually appear in pairs from small groth either side of the divisions in the stem, usually in the new groth (near the tips), then the hairs start to grow in the all the centers, sometimes the hairs appear in the centers first. When the plant matures there will be many curly hairs on the heads, colored from off white to orange to brown. 

Males start with a small groth/s in the sameplace as the female but groths are closer to the stem division and appear more as clusters or bunches growing into small ball then they burst speading a fine pollen .

The Males should be removed before they burst. Males can appear to be unsexed but have a single branch or tip sexually mature especially if its in direct contact with a female. 

The male balls shown on the right are on the stem where the 3rd. and 4th braches from the bottom of the plant and did not grow from clusters in new groth as described above, but this is what they look like anyway or bunches of them things, they go a lighter green before they burst it only takes a day or two.