» Cantigny Park    A 500-acre public park and recreation area left by Colonel Robert R. McCormick. Garden areas include formal gardens, an idea garden, and a greenhouse that is occasionally opened to the public.    http://www.cantignypark.com/

» Klehm Arboretum and Botanic Garden    Former nursery in Rockford features a combination of plants native to the midwest and from around the world. Photo gallery, event calendar, visitor information.    http://www.klehm.org/

» Luthy Botanical Garden    Part of the Peoria Park District, features a tropical conservatory and specialty gardens including wildlife and woodland garden, collections of herbs, viburnums, and dwarf conifers, and a children’s garden.    http://www.peoriaparks.org/luthy/luthymain.html

» Quad City Botanical Center    Gardens located near the bank of the Mississippi River in Rock Island. Overview of admissions, facilities, and programs plus maps, directions, and calendar of events.    http://www.qcgardens.com/

» The Ladd Arboretum and Evanston Ecology Center    Educational and community gardening organization in Evanston. Overview of areas and specializations, meetings, membership, and volunteering.    http://www.laddarboretum.org/

» The Morton Arboretum    Facility for research, education and enjoyment near Chicago aims to collect and study trees, shrubs, and other plants from around the world, and to display them across naturally beautiful landscapes. Information about activities, programs, and collections    http://www.mortonarb.org/

» Washington Park Botanical Garden    Part of the Springfield Parks District, this facility features greenhouses and a tropical conservatory, a large rose garden, a scent and texture garden, an iris garden, perennial border, a rockery, and an outdoor cactus garden.    http://www.springfieldparks.org/garden/