Lawn to Lake Midwest is a great resource as the experts share each month care tips on how to have a healthy lawn all year long while using natural lawn care practices. For the month of May check out the things to watch out for and why testing your soil is important.
You will also find resources for more options for a sustainable lawn:
Forest Improvement Handbook, The Education Store
Turfgrass Science, Department of Horticulture & Landscape Architecture
Turfgrass Insect Management, The Education Store
Tree Planting Part 1: Choosing a Tree, Video, The Education Store
Purdue Turf Doctor app for Apple iOS, Apple App Store