Volunteer training — “Join our fabulous volunteer corps as a gardener, nursery caretaker, curatorial assistant, plant records volunteer, docent or naturalist,” reads a notice on the arboretum Web site. Basic training is scheduled from 9 a.m. to noon on four successive Wednesdays, Jan. 20 and 27, and Feb. 3 and 10. This will be followed by specialized training for each crew. For more information or to sign up, contact Suzanne Ullensvang, (530) 752-8324 or sullensvang@ucdavis.edu.

Folk Music Jams — Play or listen. Noon Jan. 22, and Feb. 5 and 19. Wyatt Deck.

Tour — Birds that Winter in the Arboretum. This program features a slide show and (weather permitting) a birdwatching stroll through the arboretum. 11 a.m. Feb. 6, arboretum headquarters, La Rue Road just west of California Avenue.

Tour — Beauty in the Dead of Winter. This program highlights beauty where you might not expect it. Hot cider and popcorn rounds out the morning event. 11 a.m. Feb. 13, Buehler Alumni and Visitors Center, Mrak Hall Drive.

Tour — Acacia Encounters, in the Eric E. Conn Acacia Grove, comprising more than 50 species of acacias from Australia, Africa and the Americas. 11 a.m. Feb. 20, Putah Creek Lodge, on the south side of the arboretum waterway, west of California Avenue.

Workshop — Native Californian Elderberry Flute-Making Workshop: In this free, two-hour program led by Antonio Flores, East Bay Regional Parks docent, you will learn how to make a Native Californian elderberry flute. Flores also will talk about the culture of flutemaking and teach people how to play their flutes. All materials will be supplied; please bring sharpened pocketknives. All ages are invited; adults must supervise their young children. 1-3 p.m. Feb. 28, 146 Environmental Horticulture, Old Davis Road just east of Mrak Hall Drive.

All events are free and open to the public. More information: (530) 752-4880 or arboretum.ucdavis.edu (for directions, click on “Plan Your Visit”).