depends on how many seeds you want would try to do it as early in flowering as possible obviously if you wait till 4 weeks there will be plenty of sites to pollinate but if your just looking for a few seeds you can pollinate earlier and if you want very few just pollinate the preflowers that show up along the mainstem above the internodes when the plants is mature most strains dont have many preflowers but there is a few that will preflower alot in a veg state.
if you want alot of seeds flowering the females about 1 week earlier would help but you would probably be fine even if you started them at the same time if you was just doing the preflowers you would want to start flowering the males first.
bejay Reviewed by bejay on . Stay of execution of my males....so now what? Ok I have alot of good seedlings under the lights right now...they have good air, water, and soil. I have lost a number of gardens to theft, symphilids, rust other mistakes over the last year since I have donned my green thumb. My seeds are very limited and some of the strains that I have just germinated I can't find anywhere else. So my question is how do I keep my males in the house without pollinating my females in the same house till I am ready to actually pollinate? Can I keep Rating: 5