The Horn Farm Center, 4945 Horn Road, York, has planned two programs. There is a fee, and registration is required at https://hornfarmcenter.org. For more information, call 717-757-6441 or email education@hornfarmcenter.org.

Foraging for Roots will take place on Sunday, Oct. 26, from 11 a.m. to 3 p.m. Participants will learn about roots that are suitable for harvesting at this time of year and discuss ecology, history, recipes, and how to harvest and process the plants. Presenters will walk attendees through the process of making dandelion root coffee, and samples will be available. Participants will get hands-on experience digging up and cleaning the roots. Both beginners and those with foraging experience are welcome.

"The Land and Peoples of the Lower Susquehanna Valley" lecture series will be offered beginning on Monday, Oct. 27. The series will explore the geological, archaeological, and cultural history of the region to help people better understand the land they live on and the people who have left their marks on it. Participants will be invited to share their own stories, insights, and local knowledge. All sessions will be led by Horn Farm Center board member Ed Wilson, who will be accompanied by regional experts with specialized knowledge.

The classes will be held on Mondays, Oct. 27, Nov. 10, Nov. 24, and Dec. 8, from 6 to 8 p.m. All sessions will take place at the Susquehanna National Heritage Area's Columbia Crossing River Trails Center, 41 Walnut St., Columbia.