So recently myself, along with a few other members have been chatting in our journals about color change in plants. (I'm growing some Purple Haze and I want to coax some color out toward the end of the grow)
What we have seem to come up with as a fact, is that temps greatly affect the color of the plant toward the end of the grow. (seen from other peoples past experience)
What we were trying to figure out is if there are any other factors that affect color change in plants.
One member I spoke with (I believe it was Art) said that he had gotten some color change out of his plant when he used to do soil, but now that he is Hydro he doesn't get the same results even with the same strain.
So we kind of came up with the hypothesis that pH could have an affect on the change of color in the leaves.
As most you probably know, for soil you want a pH of 7.0 and for hydro, a pH of 5.8.
Could this difference in pH affect color change?
I know at different pH's nute uptake is more or less effective (some nutes get taken up easily and others do not depending on pH)
So we kind of thought that by increasing your pH to that of a normal soil medium during the last two weeks or so, as well as dropping the temps, this might cause color change in hydroponic systems.
Can't seem to find any information on color change in hydro, and it seems to be much easier in soil and I really want to know why (The Science nerd inside me)
I know we got some big brains on this site and I'm hoping someone could spread some light on the subject, if not, I'm gunna start doing my own hands on research - like growing the same strain in soil and in hydro, and trying different variables to see what happens.
I know color has nothing to do with potency - but as I said, I want to know WHY it changes color, not just looking for bag appeal.
So if anyone has any ideas please post them here!
Thanks for reading!