How long before harvest are yellowing leaves ok?
Let's just assume a "typical" 63 day/9 Week indoor strain. How far in/how many days or weeks before harvest would you like to see (or at least not be worried by) some fan leaves yellowing?
I typically start seeing some around day 40 with most strains in my experience.
What all does everyone else think? I Assume some strains don't really yellow out as much if at all and others are more prone to it. I also assume it depends on when they run out of nitrogen which would depends on growth rate and feeding to a large degree.
Maybe it's a bad question due to ambiguity, but a question I was thinking about none the less. Thanks for your time, and hopefully responses.