Well first What is a Hermi? It is a female plant that has been very stressed out to the point where she will grow male flowers.
A hermi can also be because of the plants genetics but from experience this comes from the plants genes containing earlier genes of a hermi before it such as the mother
Now why would a person want to that? Well a hermi's pollen from its pollen sac if it were to pollinate a real female
the real female would produce ALL FEMALE SEEDS
They have a nice a lil purpose although most growers fear them... But how could you make one....
Well, this might help, a few guides or steps I've learned over 7 yrs of growing making stupid countless mistakes to good grows turning my ladies into hermi but it should do the trick!
*Methods to Maddness*
(STRESS THE FEMALE DON'T KILL THE FEMALE)
*1ST*
Feed the pre-flowering female Nitrogen instead of Phosphorus (don't over do it tho)
*2nd*
Disturb the female light cycle different periods of time 12/12
*3rd*
Disturbs the female plant's dark period by turning light on and off
*4th*
Trim a few leafs and bend stem(don't snap the stem), poke hole with sewing needle right threw stem,try topping( don't cut or poke too much this is just to induce stress)
*5th*
Use temperature from hot tot cold, cold to hot (don't freeze or burn) the plant
* These five steps are to stress or abuse any female plant to the point of no return(Hermi), be very careful in doing so make sure to put the hermi in a different room or area when doing this she might turn the other females into hermi also
*If you don't want hermi just put "DON'T" in front of each step*
Peace,Love and Happiness