Hi. I have 6 plants going on their 4th week of veg. I have topped them all within the last week at about 12-13". I can tell that 2 definitely have hairs but I think the other 4 may be developing those dreaded balls. They just showed within the last 3 days. I do not have any pics to post so my question is this: If I can't really be sure yet if they are male, how long do I have before they pose a threat to my girls?
Thanks and

all.