Will it kill my plants if I put them in flowering for a while to see which are females, then put them back to veg. stage - grow them big, then flower them when their ready?
no it wont kill them, but its realy not that good either, if u want to sex it, take a clone & sex it, when the clone shows its sex then u know the sex of the "donor", or take a black light proof bag & put it around 1 branch for 12/12, but youll have to take it off & put it on all the time while your doing 12/12