Illinois Lawn Grasses
http://urbanext.illinois.edu/lawnchallenge/lesson6b.html

Illinois Best Plants
http://www.bestplants.org/toc.htm

Illinois Tree Selection
http://urbanext.illinois.edu/treeselect/index.html

Chicagoland Gardening Magazine
http://www.chicagolandgardening.com/

Roses In Illinois
http://urbanext.illinois.edu/roses/planting.html