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For Your Garden - June 2011

Native plants provide beauty as well as food and shelter for wildlife. Native species are adapted to the Illinois climate. They require little or no watering and are resistant to drought, insects and most diseases. Because they are perennials, you can welcome their presence year after year. Consider adding a few native plant species to your garden soon!

wild blue iris (Iris shrevei)

Wild blue iris blooms from May through June in areas with predominantly wet soil throughout Illinois. The plant has a thick underground stem, or rhizome. One to several flowers develop on the tip of a stalk. Flowers contain three blue petals and three blue sepals with a yellow base. Leaves are flat and smooth, up to three feet long and one and one-half inches wide. The fruits are three-angled capsules, up to four inches long.

Classification and taxonomy are based on Mohlenbrock, Robert H. 2014. Vascular flora of Illinois: A field guide. Fourth edition. Southern Illinois University Press, Carbondale. 536 pp.

Illinois Range

Native Plant Information

For more information about Illinois native plants, visit our Native Habitat Descriptions, Requirements, and Plant Lists page. The following publications are available from the IDNR on our publications page.


​Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Order: Liliales
Family: Iridaceae

Illinois Status: common, native