HOUSEHOLD WASTE ... Unwanted toxic household items — from pesticides to pool chemicals — can be dropped off between 9 a.m. and noon on Saturday, May 4, at the Regional Water Quality Control Plant, 2501 Embarcadero Way, Palo Alto. Drop offs are limited to 15 gallons or 125 pounds of toxics per visit. For a complete list of what's accepted, go to www.cityofpaloalto.org/hazwaste.
LAWNS AND MORE ... Sherri Osaka, a landscape architect and Bay-Friendly qualified designer, will teach a class on "Lawn Alternatives" from 10:30 a.m. to 12:30 p.m. on Saturday, May 4, at Common Ground, 559 College Ave., Palo Alto. Emphasis will be on drought-tolerant plants, sheet mulching, graywater and rainwater irrigation and pervious paving. Cost is $31. Later that day, from 1 to 4 p.m., a native plant sale (from Native Revival Nursery) will be held at Common Ground, featuring flowering perennials, shrubs and grasses. Information: 650-493-6072 or www.commongroundinpaloalto.org; to preview plants, visit www.nativerevival.com/
TEA WITH ROSARIANS ... Betsy Fryberger and her collaborators will talk about the Renovated Rose Garden from 2 to 4 p.m. on Sunday, May 5, in the Carriage House (and garden) at Gamble Garden, 1431 Waverley St., Palo Alto. Wear a garden hat while hearing about how choices were made in the garden and enjoying tea at the free event. Information: 650-329-1356 or www.gamblegarden.org
A LA CARTE & ART ... Mountain View's annual street fair, "A La Carte & Art" is set for 10 a.m. to 6 p.m. on Saturday, May 4, and Sunday, May 5, on Castro Street, between Church Street and Evelyn Avenue. A juried shows brings 200 artists with handcrafted wares, as well as live music, artisan food purveyors, home and garden exhibits, a farmers market and a classic car show. Information: 650-964-3395 or www.miramarevents.com/alacarte
FILOLI CLASSES ... Mimi Clarke will teach a couple of classes on Wednesday, May 8, at Filoli, 86 Canada Road, Woodside, including "Growing the Perfect Dahlia," from 10:30 a.m. to 12:30 p.m. ($50 for nonmembers, $40 for members) and "Veggie Garden Basics" from 1:30 to 3:30 p.m. ($40 for nonmembers, $35 for members). Information: 650-364-8300 or www.filoli.org