The California Bonsai Society presents its 53rd annual show featuring more than 100 specimens created by bonsai masters. Traditional trees such as Japanese black pine and California juniper will be displayed alongside examples of non-traditional bonsai. Saturday and Sunday, 10:30 a.m. to 4:30 p.m. Free. Huntington Library, Art Collections and Botanical Gardens, 1151 Oxford Road, San Marino. (626) 405-2128.