how do you keep a mother plant in veg for year or longer

How exactly do you grow a from seed to create a ood mother to keep for long time.

Also, can keep it in with the mother until ready to flower? please help. starting in a few days from seed.

jusy keep the light cycle long it wont flower untill 12/12 is introduced although if that plant ever crossed with an auto flowering plant it might flower anyway make sure you have plenty of room for root growth and a nice loose soil mix for good drainage and easy root growth