GROWING ORCHIDS ... Is Easier Than You Think is the title of Master Gardener and orchid expert David Giroux's free talk from 7:30 to 8:30 p.m. on Tuesday, Sept. 24, at the Los Altos Library, 13 S. San Antonio Road, Los Altos. Giroux will offer tips on maintaining healthy orchids and will repot an orchid, which will be awarded to a winning participant. He will also offer handouts with general advice and diagnose problem orchids. Information: Master Gardeners at 408-282-3105, between 9:30 a.m. and 12:30 p.m., Monday through Friday or www.mastergardeners.org
GREEN WITH GRAY? ... The City of Palo Alto along with Christina Bertea of Greywater Action will offer a free workshop, "From Graywater to Green Gardens" from 9 a.m. to noon on Saturday, Sept. 28, at the Cubberley Community Center, H-1, 4000 Middlefield Road, Palo Alto. The class will focus on how to reuse water from sinks, showers and washing machines to irrigate plants. Participants will put together a sample system. Information: Pre-registration is required; visit www.cityofpaloalto.org/workshops or call 650-329-2241.
AUTUMN AT FILOLI ... The annual Autumn at Filoli Festival will be held from 10 a.m. to 3:30 p.m. on Saturday, Sept. 28, at Filoli, 86 Canada Road, Woodside. The event features tastings of heirloom fruits, live music, docent-led nature hikes, orchard tours, line dancing, flower-arranging demonstrations plus entertainment for kids — puppets, magic, birds, bubbles and face painting. Admission is $25 for nonmembers, $20 for members, $5 for children 5-17, free for children 4 and younger. Advance reservations are encouraged, because space is limited. Lunch is also available for purchase. Information: 650-364-8300 or www.filoli.org