The Provincetown Conservation Trust is hosting a fall tree-planting celebration at the Shank Painter Pond Wildlife Sanctuary on Ships Way Road on Saturday, October 17th, 9 a.m. to noon. Afterwards, enjoy a free lunch at the Provincetown Brewing Co., 141 Bradford St., from 12:30 to 2 p.m. Registration required at provincetownconservationtrust.org.