Tomatomania!: 9 a.m.-5 p.m. today and Sunday. Seaside Gardens, 3700 Via Real, Carpinteria (684-6001); 9 a.m.-5 p.m. today. Topa Mountain Winery, 821 W. Ojai Ave., Ojai (640-1190). Sales of tomato seedlings, growing tips and more. Owner and producer Scott Daigre will teach a Tomato 101 class at 11 a.m. today in Ojai and 11 a.m. Sunday in Carpinteria. Admission is free in both locations. For more information, go to tomatomania.com.
Franklin Trail Weed Day: 9:30 a.m.-noon. Meet at Carpinteria High School parking lot, on west side near trailhead, 4810 Foothill Road, Carpinteria. Wear hiking shoes and clothes for changing conditions. Bring gloves, snacks, water and tools if you have them. Presented by California Native Plant Society. For more information, call Andrea at 886-4382.
Spring Medicinal Plant Workshop: 9 a.m.-3 p.m. Begins at Ventura River Preserve, ends at community kitchen in Ojai. Hosted by native plant guide Lanny Kaufer. USC School of Pharmacy Professor James Adams will demonstrate how to prepare medicinal products from seasonal native plant material while plant educator Enrique Villase¢or will give instruction on preparing healing foods and drinks from prickly pear cactus pads. $75. To register, call 646-6281.
Day of the Rose Celebration: 7-9 p.m. Trinity Lutheran Church, Fellowship Hall, 909 N. La Cumbre Road. City of Santa Barbara has issued a proclamation declaring April 11 as the “Day of the Rose” in honor of the 60th anniversary of the Santa Barbara Rose Society, which has worked with the city in tending the A.C. Postel Rose Garden across from Santa Barbara Mission. Mayor Cathy Murillo will attend. Includes rose show of members’ blooms; speakers Dan Bifano, Master Rosarian, and consulting Rosarian Holly Hagy; cake, faux rose “Champagne”; and raffle. For more information, call Linda at 451-7695.
Roses of Spring Display and Discussion: 6:30 p.m. advice from consulting Rosarians; 7 p.m. Little Rose Show and society information; 7:30 p.m. program. Ventura County Office of Education Conference Center, 5100 Adolfo Road, Camarillo. Bring roses or favorite perennial flower from your garden to share. Members and friends will display and discuss their roses as well as give tips on growing them. Part of Ventura County Rose Society meeting. Visitors welcome. Free. For more information, call Janet Sklar at 818-993-6622 or Barbara Morse at 499-1657.
Spring Native Plant Sale: 9 a.m.-6 p.m. daily through May 5. Santa Barbara Botanic Garden, nursery, 1212 Mission Canyon Road. Free admission. For more information, call Patrick Wiley at 682-4726, ext. 127, or go towww.sbbg.org.
Wildflower Report: The Los Padres National Forest issues wildflower reports for Figueroa Mountain about every two weeks atwww.fs.usda.gov/lpnf.
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. 684-4060.
Nature Walk: 10-11:30 a.m. Saturdays. Meet at Cachuma Lake Nature Center, State Route 154. Free with $10 park admission per vehicle. 688-4515 or www.cachuma.com.
Santa Barbara Arts and Crafts Show: 10 a.m.-dusk Sundays. Cabrillo Boulevard. Artists display original paintings, photography, sculpture, jewelry and crafts. Free admission. 897-1982 or www.sbaacs.com.
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. 962-6464.
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. 735-4626 orwww.lompochistory.org.
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. 965-6307 or www.afsb.org.