Not true IMO.what are the NPK values of the nutes you are using? Was it high in P and K? Yellow leaves is not a sign of harvest. You DO NOT want yellow leaves at all. Keep em green.
ok bud. Keep doing more research. IMO. You don't want yellow leaves period.Not true IMO.
I use super soil and if I get the amount correct the leaves change in the last 2wks of flower.
That way I know all the nutrients in the soil have been used up and its properly flushed.
The yellowing is a sign the plant is utilizing the sugars and nutrients in the fan leaves.
If its happening with more then 2.5-3wks left I would feed a little, if its within the 3wks its right on time.
Haha let me guess Hydro?ok bud. Keep doing more research. IMO. You don't want yellow leaves period.