Community Garlic Mustard Workdays at Thorn Creek Woods by Gary Kopycinski on March 16, 2013 Gary Kopycinski Author More in Community: Save the date for The Prairie Party at theNate June 17, 2026 Blackhawk Tower Plaza Demolition Begins June 9, 2026 Park Forest Housing Cooperative to Honor Former Residents Philip Klutznick and Jim Edgar June 9, 2026 Park Forest, IL-(ENEWSPF)- Shake the winter blahs and come spend a day in the spring woods for a Garlic Mustard Workday on any or all Saturdays March 30, April 6 and April 13 from 9 a.m. to 2 p.m., at Thorn Creek Woods Nature Preserve.