Park system's free activities begin April 5 Monmouth County Park System will offer free activities at Historic Longstreet Farm, Longstreet Road,Holmdel, beginning with a quilting demonstration April 5 from 1-3 p.m.Hand-sewn pieceswill be on display. Music Man Rich Marzec will perform tunes from the turn-of-the-century April 13 from 1-3 p.m. A blacksmith demonstration will also take place from1-3 p.m.Arug hooking and braiding demonstrationwill beApril 19 from 1-3 p.m. Wool Days and sheep shearing will be April 26-27 from noon to 3 p.m. Manasquan Reservoir Environmental Center, Georgia Tavern Road, Howell, will hold an Earth Day open house will be April 19 fromnoon to 5 p.m. at. Itwill feature birdhouse building, reptile shows, recycled crafts, and several local environmental groups. A spring perennial plant swap will be April 26 from 10 a.m. to 2 p.m. at Deep Cut Gardens, Red Hill Road, Middletown. Attendees may bring plants in 1 quart or 1- or 2-gallon containers and take home the same size and number of plants. (no annuals). Awooden hay-fork demonstrationwill be April 27 fromnoon to 4 p.m. atHistoricWalnford, Crosswicks Creek Park, Upper Freehold. For more information, visit www.monmouthcountyparks.comor call the park system at (732) 842-4000. The TTY number is 711.