when to flower my clones

[hairboy 1]

Ive just took some clones of the mamas, im just curious how big do they
have to be before I can put them under HPS 12/12 day and nite schedule???:) :) :) :)

[busteruk7]

if you are using clones just to determin the sex of the mother
i would flower them as soon as they have rooted.
if you know what sex they are and want a decent yield from them ,i would veg them for a bit i would say a month should do it some justice
cheers all :)