You can find more information about flower shows and upcoming events at chicagobotanic.org
Northshore Iris and Daylily Society Show and Sale
The sale being held on July 17 and July 18 features iris and daylily plants, which range in price from $3 to $10. The show is on Sunday only. Irises and daylilies are available for purchase on both Saturday and Sunday. The hours are 10am to 4:30pm.