A Music on the Porch bluegrass jam will be held at Governor Dick Environmental Center, 3283 Pinch Road, Mount Gretna, on Sunday, Sept. 3, from 1 to 4 p.m. Attendees should bring a lawn chair.

The activity is free and open to the public, but preregistration is required by contacting 717-964-3808 or governordick@hotmail.com and providing a name and phone number in case the program is canceled.