Originally Posted by Widow Maker More than likely they will all have seeds now. You can try to pick the male flowers off when you see them. They should be ok until they open and release pollen. I had a few older plants in my crop that were still maturing from the last crop and a few of them threw a few male flowers. I hope I cought it in time.

A few very helpful tips
A higher nitrogen concentration will give more females.
A higher potassium concentration will give more males.
A higher humidity will give more females.
A lower temperature will give more females.
More blue light will give more females.
Fewer hours of light will give more females. It is important to start these changes at the three-pairs-of-leaves stage and continue for two or three weeks, before reverting to standard conditions.
To produce our feminized seeds, we start with selected female clones. Under standard conditions these female clones do not produce any male flowers. By the method we found, we are able to have these female clones produce abundant male flowers and pollen . The pollen thus produced we use for the production of our "female" seeds.

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