I had 5 females and 2 males I kept a little too long last bloom cycle. 3 plants didn't take well, 1 has a decent amount for its size, and 1 plant is loaded with seeds. Got almost 50 seeds from her so far.
Does fertility mean anything in breeding cannabis? Or am I over thinking?
Fertility as in the timing of pollination is a vital point
best charted on male and female with your calender as often with many strains the first male pollen is sterile
so wait a few days before pollination as often the female is 2-3 weeks behind
maybe forcing you to store the best? pollen in the freezer in the mean time
on a 3ft high hybrid 50 seeds is nothing... maybe half a lower lateral
I always leave the top most to toke, leaving the lower laterals to pollinate
the advantage is you harvest the plant as you normally do
but keep the tagged lower branches growing until the seeds are clearly seen in their bracts
good luck