The plant in question used to need watereing everyday. Now it can go 3 days and still feels damp. It just makes me think it's ready to harvest because it's just not growing anymore. And I have seen those pictures in one of the 'sticky' threads JeffD. I've looked at them for a long time and still, for me, it's hard to decide when to harvest. I think it's just something people have a knack for.