Brew & Grow 1824 North Besly Court Chicago, IL 60622 (773) 395-1500
Gethsemane Garden Center 5801 North Clark Chicago, IL 60660 (773) 878-5915
Grand Street Gardens 2200 West Grand Chicago, IL 60612 (312) 829-8200
Smith & Hawken 1780 N Marcey Street Chicago, IL 60614 (312) 266-1988
I got this list off of Fox Farm Fertilizers website. These are places that carry at least some grow supplies. Maybe check with each them. I don't have experience with any of them, but thought this might help.
Hey green ... thanks a shitload for that info man.
Brew and Grow's a great place. That's the only grow shop I know. I'm actually just gettin home from there. Unfortunately, their filter selection isn't the best. But I'm definitely checking out those other places you listed.