Volunteers at the Jane Weber Evergreen Arboretum, 9215 S.E. Evergreen Highway, Vancouver, will host a Second Saturday Work Party from 10 a.m. to noon Sept. 9. Join other volunteers to weed and mulch the small gardens. Refreshments will be provided. After the work party, attendees will hear a talk by Groundskeeper Woolley. Learn more at janeweberevergreenarboretum.org.