hey sup man....the best way to prevent growing males is to find a spot thats gets a prime amount of morning sun light for at least 5 hours
for sum reason plants grow better to a few hours of morning sunlight to direct all day...also after they get about 3/4 of a foot tall
pinch off the new set of growing leaves
right above the nodes so it banches and u get more....and if u can.....tie it down so it doesnt grow up and look like weed for the cops