Tuesday Evening in the Gardens features local, regional and nationally touring musicians. Join friends and family for a summer filled with live music and comradery in this beautiful outdoor setting.   May 30 Greg Koch ft. The Koch Marshall Trio (Milwaukee, WI); Opening: Stephen Hall Experience (Racine, WI) June 6 Chris Pierce (Los Angeles, CA); Opening: Cash Box Kings (Chicago, IL) June 13 Cactus Blossoms (Minneapolis, MN) Opening: Emily Hurd (Rockford, IL) June 20 Miles Nielsen & the Rusted Hearts…