Guided walks among flowers and wildlife are planned every Saturday and Sunday from March 10 through May 13 at the Jepson Prairie native grassland reserve, part of the UC Davis Natural Reserve System.

Docents are set to lead easy walks over mima mounds (mysterious bumps in the landscape), through winding swales and around flower-fringed vernal pools. The walks are scheduled to start at 10 a.m., with no reservations needed; a $1 donation is requested. Waterproof footwear is advisable after rain.

The reserve is off Cook Lane, which cuts off Highway 113 about 10 miles south of Dixon. To arrange group tours, contact the Solano Land Trust, (707) 432-0150, ext. 202, or www.solanolandtrust.org.

UC Davis' Natural Reserve System Web site, http://nrs.ucdavis.edu, includes directions to Jepson Prairie.

At the arboretum

• Folk Music Jam Session -- Noon-1 p.m. March 9 and 23, 105 Music Building. Play or listen.
• Tour -- 11 a.m. March 10, "California Native Trees and Shrubs." Buehler Alumni and Visitors Center, Old Davis Road. Free parking in Lots 1 and 2 and the south entry garage across from the Mondavi Center for the Performing Arts.
• Walk with Warren -- Noon March 14. Meet up with Warren Roberts, the arboretum superintendent, at headquarters on LaRue Road. Parking, for a fee, in Lot 47.

All events are free and open to the public. More information: (530) 752-4880 or arboretum.ucdavis.edu.

Plant sale and social

The arboretum's Spring Plant Sale and Social is scheduled this year from 9 a.m. to noon March 17 at the nursery off Orchard Road.

The sale is limited to members of Friends of the Arboretum, but anyone is invited to join at the gate; membership is $15 for students, $40 for others and $60 for families. Every new member receives a free plant and a 10 percent member discount on purchases.

Organizers said expert garden advice will be available. The program also includes refreshments, children's activities and live music. Free parking in Lot 35.