A time consuming activity but one particular that has to be carried out, is figuring out the males from the females when you are expanding from standard seed. We’ve been expanding weed for more than 40 years and nonetheless cannot inform a female from a male till they flower for a week or two.
Considering that feminized seeds can be cloned, they are the way to go. All you have to do is plant the seed and you are expanding females.
A lot of growers can inform, or at least claim they can spot a girl from a boy and there are several articles and videos about it, but we cannot figure it out. So we’re stuck when we develop from seed, we have to let seedlings to develop for awhile in the vegetative cycle than get started flowering them (switch from 18 hours of light to 12 hours of light) so we can figure out who’s who.
Immediately after you switch your lighting schedule to 12/12 to inform a male from a female, appear for tiny balls (male plants) that get started to type and get rid of these plants, (we do save one particular to pollinate 1 female for seeds). At times the tiny balls get started forming in a couple of days and at times it requires a week or two.
When we have our girls (they have white wispy hairs/no tiny balls) figured out, we alter the flowering light cycle back to the vegetative cycle. We get started with 24 hours light for about 10 days then switch to the GLR.
You will notice weird searching single leafs expanding up by means of the tiny buds. Do not be concerned about them, just choose them off if they make you nervous or leave them.
Immediately after 10 days of 24 on, we alter back to our standard veg lighting schedule, we use the GLR (Gas Light Routine) for the remaining time in the veg cycle (now you can see why clones are so significantly far better to get started with).
Even even though the plants initially appear a tiny weird, they develop out into standard searching plants in a brief though. When you have a group of female plants expanding in the vegetative cycle, you can get started taking clones when the reduce branches get to be about 3″ lengthy or so.
All in all it can take about three weeks to differentiate the boys from the girls so it tends to make a lot of sense to maintain a mother plant expanding so you can take female clones anytime you want them.