grab a branch that's in flowering, shake it for a few minutes every day. See what happens.
All those dudes selling "feminized seeds" on craigslist... That's how they do it.
I call BS. Your story is full of holes.
The following method is used to turn plants to get feminized seeds. Just stressing a plant for seeds produces hermey likely seeds.
the actual method of obtaining feminized seeds is this:
Part A: .7 gram silver nitrate stirred into 40ml distilled water
Part B: 2.6 grams sodium thiosulfate (anhydrous) stirred into 160 ml distilled water
Next, slowly add the silver nitrate solution to the sodium thiosulfate solution while stirring. This combination is then added to 800 ml of distilled water to equal 1 liter. This is your final stock solution. It is diluted 1:9 with more distilled water to make your final working solution, which then gets sprayed on your target plant.
I agree with MD, all marijuana outdoors would hermey because of the fucking wind.
Don' spread BS you haven't tried yourself, because you read it somewhere or you heard it from a friend of a friend. the ONLY danger of having a fan in the growing room is it assists with spreading pollen should you miss ID a male plant. PERIOD