Map Dorothy's Iris Garden 5163 N. Lucas, Manton, MI 49663 Add To Trip EmailPhone: (231) 824-3328 Description Dorothy's Iris Garden offers Hybrid Iris Rhizomes. They are open early June or when flowers are in bloom. Please call to check times and dates opened. Videos TripAdvisor® Traveler Reviews More To Explore Categories: Farms & Cider Mills Attractions City: Manton Region: Northwest Although the MEDC uses reasonable efforts to maintain the accuracy of the website content, it is not represented to be error free. Read legal information.