YOGA FOR GARDENERS ... Common Ground Center Manager (and yoga teacher) Patricia Becker will offer "Yoga for Gardeners with Live Music" from 10:30 a.m. to 12:30 p.m. on Saturday, Sept. 15, at Common Ground, 559 College Ave., Palo Alto. The class will emphasize how to care for knees, back and shoulders while stretching to live music by Herb Moore. Bring a beach towel or blanket. Cost is $31. Information: 650-493-6072 or www.commongroundinpaloalto.org
MORE LAWN OPTIONS ... The California Native Plant Society, Santa Clara Valley Chapter, is organizing a symposium — "Lawn Alternatives: Do-It-Yourself Native Plantscaping" — from 8:45 a.m. to 5:30 p.m. on Saturday, Sept. 29, at Foothill College, Lecture Hall 8338, 12345 El Monte Road, Los Altos Hills. Designed for both homeowners and landscape professionals, the program includes garden design, plant selection, lawn removal and maintenance, as well as a plant and book sale. The symposium is co-sponsored by Bay Area Water Supply & Conservation Agency and Santa Clara Valley Water District and hosted by the Foothill College Environmental Horticultural Department. Cost is $85 general, $75 CNPS members by Sept. 15; $100 at the door. Information: http://symposium.cnps-scv.org, email@example.com or 650-260-3450.
WHACK INVASIVE PLANTS ... Volunteers are needed every Sunday from 9 a.m. to noon to remove invasive, non-native plants — including yellow starthistle and French broom — at Foothills Park. Friends of Foothill Park volunteers meet at the Orchard Glen picnic area, but are advised to check the website, www.fofpark.org, in case the group is heading for more remote areas of the park. Information: Bob Roth at 650-321-7882 or firstname.lastname@example.org.