Dara Emery Memorial Lecture, 3-5 p.m., Blaksley Library, Santa Barbara Botanic Garden, 1212 Mission Canyon Road. Dudleya: Conservation through Cultivation. A panel of experts on Dudleya will share unique perspectives on the complicated question of where conservation ends and horticulture begins. Panelists include Stephen McCabe, director emeritus of research at the UC Santa Cruz Arboretum; Heather Wehnau, garden plant propagation manager; and Mark Elvin, biologist for the U.S. Fish and Wildlife Service. Admission is $20 for members, $30 for nommembers. For information and reservations, visit https://www.sbbg.org/classes-events.805-682-4726
Lotusland Tours: 10 a.m. and 1:30 p.m. Wednesdays-Saturdays through mid-November. Lotusland in Montecito (address provided upon reservation). Docent-guided tours. Reservations required. $50 adults, $25 youth 3-17, free to children 2 and younger. For reservations, call 805-969-9990 or go to www.lotusland.org.
Santa Barbara County Courthouse Tours: 2 p.m. daily; 10:30 a.m. Monday-Fridays. 1100 Anacapa St.; meet in Mural Room. Free. Also: The Clock Gallery is open 11:45 a.m.-1 p.m. Monday, Wednesday and Friday and 1-2 p.m. Saturday. 805-962-6464.
Santa Barbara Arts and Crafts Show: 10 a.m.-dusk Sundays. Cabrillo Boulevard. Artists display original paintings, photography, sculpture, jewelry and crafts. Free admission. 805-897-1982 or www.sbaacs.com.
Nature Walk: 10-11:30 a.m. Saturdays. Meet at Cachuma Lake Nature Center, State Route 154. Free with $10 park admission per vehicle. 805-688-4515 or www.cachuma.com.
Historic Santa Barbara Walking Tours: 10 a.m.-noon. Saturdays. Meet on steps of City Hall by De la Guerra Plaza. Covers old Santa Barbara architecture and history. Also: 10 a.m.-noon Sundays. Meet at Central Library, 40 E. Anapamu St. Covers post-1925 architecture, landscape design and Santa Barbara history. No baby strollers or dogs. Presented by Architectural Foundation of Santa Barbara. $10 general, free to children ages 3-12 if accompanied by an adult. 805-965-6307 or www.afsb.org.
Fabing-McKay-Spanne House Tours: 9-11 a.m. Mondays and Thursdays. 207 N. L St., Lompoc. The historic house, blacksmith shop, reference room, museum room and carriage house are available for viewing. Hosted by Lompoc Valley Historical Society. Admission by donation. 805-735-4626 or www.lompochistory.org.
Styrofoam Recycling: Free drop-offs of Styrofoam 8 a.m.-4 p.m. Monday-Saturday at MarBorg, 132 Nopalitos Way in Santa Barbara, and 9 a.m.-4 p.m. Monday-Friday and 9:15 a.m.-4 p.m. Saturday at the Goleta location, 20 David Love Place, as part of new pilot program between MarBorg Industries and Heal the Ocean. Styrofoam must be clean (no food, tape or aluminum wrapping, concrete, etc.). 805-963-1852 or 805-965-7570.
Carpinteria Salt Marsh Nature Park Docent Tour: 10 a.m. Saturdays. Park entrance across from Sandyland and Ash avenues in Carpinteria. Docent-led tour provides history of the landmark’s rescue and geology, flora and fauna. Free. 805-684-4060.
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