You can download printed publications for landscaping free of charge from http://hnr.k-state.edu/extension/publications/landscaping.html . Information on plants recommended for Kansas can be found at http://hnr.k-state.edu/extension/info-center/recommended-plants/index.html
You may also request printed copies from your local K-State Research and Extension office. There may be a small charge for printed copies of larger publications.
If you need to know how to contact your local extension office, go to http://www.ksre.ksu.edu/Map.aspx and mouse over your county. (Ward Upham)