A Fine Selection of Quality Wholesale Ag Chemicals OPF Ottawa Plant Food, Inc. Ottawa, IL 61350 3076 N Rt 71 at I-80 800-255-6516 815-433-2090 A Fine Selection of Quality Wholesale Ag Chemicals OPF Ottawa Plant Food, Inc. Ottawa, IL 61350 3076 N Rt 71 at I-80 800-255-6516 815-433-2090