Volunteer for invasive plant removal at High School Park, Montgomery Ave., Elkins Park, or planning a meadow and demonstration garden at the Friends of High School Park office, 7910 Montgomery Ave., Elkins Park, from 10 a.m. to 2 p.m. Mondays, Wednesdays and Fridays during the winter months. Free. To sign up or for information: 215-782-8082, email@example.com, www.highschoolpark.org.
Stories From the Garden Book group discusses works on gardening, plants, nature, the land from 5:45 to 7:45 p.m. Jan. 7 at Pennsylvania Horticultural Society, McLean Library, 100 N. 20th St. Free; pre-registration requested: firstname.lastname@example.org, 215-988-8772. Participants must read Jane Stevenson's Garden Guerrillas (one of three novellas in her book Good Women) before this meeting. Information: www.pennsylvaniahorticulturalsociety.org.
Elements of Garden Design Program with master gardener Marc Radell at 7 p.m. Jan. 7 at the Penn State Cooperative Extension, Maple Room, 1015 Bridge Rd., Collegeville. Fee: $20; pre-registration and payment at least seven days in advance. Information: 610-489-4315; http://montgomery.extension.psu.edu, click on "horticulture," "coming events," "garden study series."
Winter Lecture Series Ticket book available for eight lectures at 2 p.m. on Sundays, Jan. 10 through Feb. 28. Fee: $56; $45 full-time students (individual lectures are $10 each; $8 full-time students). Bowman's Hill Wildflower Preserve, 1635 River Rd. (Route 32), New Hope; 215-862-2924; www.bhwp.org.