Books for Michigan gardeners

My favorite class at U of M was Woody Plants, and the required text, written by Burton V. Barnes and the late great Warren H. Wagner, is well worth reading...although it didn't keep me from killing several shrubs and a Pinus Strobus. AADL has several books about gardening in Michigan for both experts and those of us with perennially black thumbs. The free edition of Michigan Gardener (available at many locations around town) recommends the following in their April 2008 issue: The Michigan Gardener's Companion: An Insider's Guide to Gardening in the Great Lakes State, Covering Ground, and Viburnums: Flowering Shrubs for Every Season.