Thanks Kevin for your information.
I have also found much help from the University of MN websites Each state probably has their own "extention services". Actually, i learned about this a year ago. But only now I have began reading more to learn much much much information. If any of the information seems of help to you, check it out at http://www.extension.umn.edu/topics....5&subtopic=155

What i've found is that for Minnesota, this is the absolute best reference because unlike other "books" or "e-files", this is written for my state and my region. They know what grows and what doesn't. They live here, and know the lawns. They are up to date! So check it out, it's easy. Actually, why not just right click on this link and select "open in new window" and it will load a seperate window allowing you to read & reply to lawnforum.com and peruse a wealth of knowledge.
http://www.extension.umn.edu/topics....5&subtopic=155
But like i said, after you get done checking out this site, google your states "Extension service". include university in the seach because usually the "extension service" is a part of the university and not government run.

Publications


Characteristics of Natural and Manufactured Fertilizers for Lawns
Fertilizing Lawns
Ground Covers for Rough Sites
Home Lawn, The
Lawn Care Practices to Reduce the Need for Fertilizers and Pesticides
Lawn Clipping Management
Lawn Renovation
Low Input Lawn Care
Minnesota Gardening 2005 Calendar
Options for Disposing of Leaves
Ornamental Grasses for Cold Climates
Ornamental Grasses for Minnesota
Ornamental Grasses for Minnesota
Preventing Pollution Problems from Lawn and Garden Fertilizers
Responsible Fertilizer Practices for Lawns
Responsible Use of Lawn Care Pesticides
Seeding and Sodding Home Lawns
Thatch Control in Lawns and Turf
Watering Lawns and Other Turf
Weed Control in Lawns and Other Turf

Good luck! Please comment on this post!