Can males revert back into veg?

Once males fully flower they will not revert back into vegetive growth, no matter how much light you give them, they seem more delicate than females and more final with their flowering, that is, once they flower, that is it. You don't need to keep a male going for breeding experiments, just collect the pollen from harvested flowers - let the flowers dry, remove any green matter from the dropped pollen, leaving behind only yellow pollen/powder, then let dry again, just the pollen for about a week in the dark, place it in an airtight container in a dark and cool spot like a cupboard and it will last at least 6 months or more for any future breeding projects. I find using ceramic bowls the best for collecting pollen, it sticks to plastic too much. Chop the male flowers into short pieces and just leave them laying in the bowls in a dark cupboard and after 5 days or so they will have opened and released any pollen. I grow all my males outdoors during winter and then use the pollen for summer breeding projects 4-5 months later with 100% fertilization rates and have been doing this for years already. Just do not put the pollen in the fridge or freezer, this will destroy it. Since it takes only one pollen grain to fertilize a female flower, you can mix the pollen with (corn) flour to exrend it, this is handy if you only have a small amount of pollen, in ratios up to 50:1, but I prefer one third pollen and two thirds flour and this works just fine. Pick a still evening and apply the pollen mixture with a small paint brush and don't use Q-tips, the pollen sticks to it and not the pistils! Best time to fertilize is quite early in the flowering cycle, as soon as the female flowers have formed small tufts/budlets with 100% white pistils. The seeds take 4-5 weeks to mature and when they are ready, the calyxes will split open to reveal the shiny brown seed inside. One branch of moderate length pollinated this way will produce 100-300 seeds easily. The beauty of this method is that the base of the flowers will be seeded, while the top four fifths of the flower will be seedless, making them much more smokeable, rather than pollinating later on and ending up with fully seeded buds and more seeds than you can poke a stick at! (Ask me how I know!) Believe it or not, seeding buds early like this can help prevent hermaphroditism in cannabis, as the hormones associated with seed production "trick" the plant into "thinking" there is no need to ever grow male flowers. Be warned though, creating your own strains is addictive! However, you then have to make the effort to grow your own strains and not just rely on the feminized seeds you bought! Hope this helps, Organoman.