From a pure novice guys. To make feminized seed, you must reverse a female ( either reg seed or feminized) by usually spraying CS or STS on the plant, depending on methods used xtimes in x days, and wait for the transformation….the sacs will form, mature and begin to release
In about 3weeks.
Start the recipient plant about 2 weeks after the one you are reversing, so that plant will be early flowering when the pollen is flying, and giving seeds a good 6weeks to mature.
The seeds will all be female.