• BASF Turf and Ornamental
• nu-grow
• Dow AgroSciences
• Monsanto
• Chemtura
• Advan
• Nufarm
• Applied Biochemists
• Syngenta
• PBI Gordon
• Profile Products
• Valent
• Turf-Seed, Inc - General Turf Info.
• Bamert Seed Company - Native Grass Info.
• Jacklin Seed - General Turf Info.
• Allied Seed - General Turf Info.
• Applewood Seed Company - Wildflower Info.
• Titan Ltd. - Turf Grass Seed
• The Doggett Corporation - Horticultural Fertilizers

Labels and MSDS

• Bluebook Online
• CDMS Crop Data Management Services
• MSDS Labels - GROWMARK

• Purdue Turfgrass Program
• Purdue Turfgrass ID Tool
• Purdue Dept. Botany and Plant Pathology
• Pest Management Publications
• Horticulture Newsletters
• Extension Turfgrass Publications
• Turfgrass Extension Programs
• Horticulture Publications
• Horticulture & Home Pest News
• Plant Disease Diagnostics

Associations

• Sports Turf Manager Association
• Weed Science Society of America
• Golf Course Superintendents Association of America
• Georgia Turfgrass Association
• Green Net Online Network
• Mid Am Horticultural Trade Show
• Professional Lawn Care Assoc. of America
• All Golf Quad Cities
• National Turgrass Evaluation Program
• University of Illinois Extension Service
• Trees Forever
• Ohio Turf Federation