No its not. My plants dont yellow during flowering. Give them more nitrogen to stop the yellowing.Yellowing is a natural process during flowering though. Can u give me more details?
Yep. A 3-1-2 ratio along with the needed macros and trace elements from start to finish.Yellowing at that stage is not a natural process. People will often tell you it simply because they don't know what they are doing or how to stop it so just play the old "oh, it's natural" card to save face. Yellowing typically means they are hungry. You should grow with the aim of keeping green (read that as HAPPY AND HEALTHY) leaves til harvest.