Concord, eh? Funny... I have a long history out thattaway. I still remember the old Pewter Pot restaurant in Lex, before the yuppies overran the place. And my mom used to take me to Drumlin Farm and Great Meadows when I was still just an aspiring nerd

I haven't seen a printed guide to feeding of major strains, but if you google 'strainbase' or 'cannabis strainbase' I KNOW I have seen something that has at least grow reports and ratings on many strains- some of the grow reports DO include heavy/light feeder and how long the grower vegged for.

You can also post up which strain(s) you are interested in, and chances are, someone here has experience and can point you in the right direction. Even better if you know the parentage of that strain, since so many of the strains used for breeding are classics in their own right.