Sunday, April 7. Noon-4 p.m. Free!  All ages: children younger than 15 must be accompanied by an adult. Registration is required by April 1: 708.747.6320.

Shake the winter blahs and come help in the annual spring cleaning. There will be indoor and outdoor work preparing for spring. Come help build or repair boardwalks and maintain the trails throughout the preserve. Or come weed and nurture our Prairie Sampler and butterfly garden. Bring a lunch and gloves and dress for the weather.  Refreshments will be provided. Part of this program will be held indoors in an accessible facility.  Outdoor work is on natural surface trails across uneven terrain.