Notwithstanding the Education Code, including, but not limited to, provisions relating to curriculum requirements, on the first day of spring or on another day determined by public schools throughout the state, these schools are encouraged to provide education that instructs students on the history and importance of agriculture in California. This instruction may include education on agricultural history, nutrition, economics, or the planting of a school garden ; or the use of any educational device that commemorates agriculture’s importance in California.