SOUTH PORTLAND — The South Portland Land Trust will hold its annual Earth Day clean-up on Saturday from 8:30 a.m. to 12 p.m. at various locations throughout the state.

Volunteers can register online or in-person the morning of the event at Mill Creek Park. Individuals and groups can choose their own clean-up locations, which range from Bug Light Park to Clarks Pond.

More than 20 groups and organizations and 200 individuals are expected to participate, making it the largest to date. Last year’s event attracted 150 volunteers.