As soon as the 12/12 starts then the flowering process begins and with various maturatin times the more light it gets in that cycle then the better the yeild.
gunge9 Reviewed by gunge9 on . an immature plant... let's say at 3 weeks into flowering, you have an immature plant in your garden due to lack of light... IF you add more light and get it healthy, would the yield be less if you harvested weeks later than planned-- allowing it to mature properly? Rating: 5