Hyattsville needs group or individual help to remove non-native invasive plants from Trumbule Nature Trail in Magruder Park, from 9 a.m. to noon on Saturday. Volunteers are asked to wear sturdy shoes, long pants and long sleeves and to bring work gloves. Tools will be provided. The park is at 40th Avenue and Hamilton Street, Hyattsville. Call Colleen Aistis at 301-985-5057 or e-mail caistis@hyattsville.org.

Riversdale House Museum seeks docents to lead guided tours from noon to 3:30 p.m. Fridays and Sundays or at other times by appointment. A six-week training course is provided. Training begins Sunday with a session from 1 to 3 p.m. Volunteers are also needed to work in the museum shop selling tickets and to help with demonstrations of open-hearth cooking on Sundays. The time commitment is one four-hour shift per month. The museum is at 4811 Riverdale Rd., Riverdale Park. Call 301-864-0420.

KinderFest, sponsored by the Maryland-National Capital Park and Planning Commission, needs volunteers 13 and older to help with entertainment, games, arts and crafts, scarecrow-making and an information booth. Volunteers also are needed to wear costume-character outfits at the Oct. 2 event at Watkins Regional Park. Call 301-218-6700.

The Anacostia Watershed Society needs volunteers for tree planting 9 a.m. to noon Oct. 15. Shovels and gloves will be provided. Call 301-699-6204 or send e-mail to info@anacostiaws.org.

The Maryland Crime Victims' Resource Center Inc. needs volunteers to call victims, witnesses and survivors to inform them about available services and referrals. Volunteers also may perform office and administrative duties. Mail a resume to 14750 Main St., Suite 1B, Upper Marlboro, Md., 20772, fax to 301-952-2319, or send by e-mail to mail@mdcrimevictims.org.

The Prince George's County Health Department needs Medical Reserve Corps volunteer physicians, nurses, pharmacists, mental health workers and other medical personnel, social workers, computer technicians, administrative and clerical assistants, client greeters and interpreters to help in the event of widespread disasters or emergencies. The next round of training is from 10 a.m. to noon Tuesday in Cheverly, or from 6 to 8 p.m. next Thursday in Largo. Call Cynthia Baker at 301-883-7802 or e-mail cnbaker@co.pg.md.us.

Greenbelt Park, operated by the National Park Service, needs volunteers to help remove invasive plants, from 11 a.m. Oct. 1. Bring gloves and drinking water. Meet at the Sweetgum Picnic Area, 6565 Greenbelt Rd. Call 301-344-3944.

Columbia Lighthouse for the Blind needs volunteers to serve as readers, grocery shoppers, camp counselors and to help blind or visually impaired children at special events. Call Jocelyn Hunter at 202-454-6422 or go to www.clb.org/volunteer.

The Hillcrest Heights Community Center needs volunteers to help with decorating, setting up and dismantling and with food service at the center's Senior Extravaganza Fashion Show on Oct. 15. The time commitment is from noon to 6 p.m. or from 2 to 10 p.m. Call 301-505-0896.

The Neighborhood Design Center seeks volunteer landscape architects and designers to draft simple landscaping plans for community planting projects to be installed on Oct. 15 for "Gorgeous Prince George's Day." Volunteers also are needed that day to help with planting at schools and in neighborhoods. Call 301-779-6010 or e-mail jtownshend@ndc-md.org.

The Heart of America Foundation seeks volunteers, available during weekday business hours, to sort and help distribute donated books to elementary schoolchildren in the metro area for its Books From the Heart program. A volunteer driver with an SUV or a covered truck is needed for pickups and deliveries one day a week. Reimbursement for mileage and gas is available. Call Colleen Noland at 202-347-6278 or e-mail colleen@heartofamerica.org.

To Submit an Item

E-mail: pgextra@washpost.com

Fax: 301-618-1780

Mail: Volunteers, Prince George's Extra, The Washington Post, 9500 Arena Dr., Suite 400, Largo, Md. 20774.

Details: If you wish to volunteer, contact the agencies directly.