COUNTY

Moraine State Park, Muddy Creek Township, will host a“Winter Weeds Walk” from 1 to 3 p.m. Saturday from the Sunken Garden Trailhead on the South Shore; a Spring Peepers children’s program from 10:30 to 11:30 a.m. March 16 at Pavilion 7 of McDanel’s launch on the North Shore; and a Project Learning Tree teacher workshop from 8:30 a.m. to 3 p.m. March 25 at the Moraine Outdoor Center, Davis Hollow Marina, North Shore, at a cost of $20 (reservations are required). E-mail morainesp@pa.gov or call 724-368-8811.

REGION

Crooked Creek Environmental Learning Center, 142 Kerr Road, near Ford City, will host an Audubon Society program on how to participate in FrogWatch USA, a citizen science program about wetlands, frogs and toads, from 2 to 4 p.m. Sunday. Visit www.crookedcreekelc.org or call 724-763-6316.