UC Cooperative Extension Harvest Day. Hear presentations by area gardening experts; tour the Horticulture Center demonstration gardens; taste fruit including grapes and tomatoes; visit educational booths; and ask master gardeners questions. 8 a.m.-2 p.m. Fair Oaks Horticulture Center, 11549 Fair Oaks Blvd., Fair Oaks. Free. (916) 875-6913.
Jensen Garden volunteer work day. Bring gloves, hand pruners, lunch, and a drink. 9 a.m.-1 p.m. Jensen Garden, 8520 Fair Oaks, Blvd., Carmichael. (916) 485-5322 ext. 23.
Placer County master gardeners at the farmers market will answer gardening questions. 8 a.m. to noon. Auburn courthouse parking lot, Auburn-Folsom Road, Auburn. (530) 885-7385.
Excellence in Educations' fourth annual luxury home tour with five houses in Truckee's Martis Camp. 10 a.m.-4 p.m. $40 advance, $45 day of event. For locations and tickets, call (530) 550-7984.
Farm Fresh to You farm tour. 11 a.m.-2 p.m., with 11:30 a.m. talk on organic farming by chief farmer Thaddeus Barsotti. 23800 Highway 16, Capay. (800) 796-6009.
Mulch Madness community party. Spread mulch in rings around trees in McKinley Park. 6-8 p.m. Near the Shepard Garden and Art Center, McKinley Park, Sacramento. (916) 924-8733, ext. 122.
Classes and workshops
"Armchair Birding Plants In Your Yard and the Feathered Friends Who Visit," UC Davis guided tour. Learn which plants attract birds and how to spot them with bird watcher Lois Richter. 9-10:30 a.m. Arboretum Terrace Garden and Lois Crowe Patio, Davis Commons Shopping Center, Richards Boulevard and First Street, Davis. (530) 752-4880.
"Your First Organic Garden." Learn the basics of gardening: soil, plants, water, compost and bugs. Easy plants and seeds provided to get you started. 9-11 a.m. Soil Born Farms American River Ranch, 2140 Chase Drive, Rancho Cordova. (916) 868-6399.
Orchid and bonsai workshop presented by Exotic Plants owner and founder Kifumi Keppler. Noon- 1:30 p.m. orchid workshop, 2-3 p.m. bonsai workshop. Exotic Plants, 1833 Howe Ave., Sacramento. Free. (916) 922-4769.
"Composting with Worms," Nevada County Fair master gardener workshop. 11 a.m. Nevada County Fairground in "Ag-Sperience," 11228 McCourtney Road, Grass Valley. Free. (530) 273-0919.
"All Dried Up!" food-preservation public demonstration hosted by Sacramento County master food preservers. Learn safe dehydration techniques. 10 a.m.-noon. Sacramento Cooperative Extension Office, 4145 Branch Center Road, Sacramento. Free. (916) 875-6913.