For me they started showing up around 2 1/2 months in veg for me. Always on an 18/6 light cycle, never flipped it to 12 once. I noticed they showed up not to long after the stipules formed (at least for me). I'm only a handful of grows in myself and did some more reasesrch and it seems for some people they can come from in (the pre-flowers) as early as 3 weeks or not at all. I'm ripping it out in a day or two when my new seed germinates. Hope this helps.
Yeah I thought about that but personally I would rather spend my electricity bill on a female. I'm horrible at cloning so I'm practicing with some of the branches on my male. I'm still a new grower but if the clones take root can I grow those out and use the pollen from them? Might be a dumb question but I kinda wanna get a handful of successful grows before I even think about breeding.
Sure, you could definitely do that. I've never grown out just a male. I keep saying that I want to, mainly to pay attention to the growth structure. I've read a few times from different members that males don't really need all that much light. You could allow it to mature just sitting on a windowsill.