Feb. 23 Texas Water Symposium The Meadows Center for Water and the Environment, Texas Public Radio and the Hill Country Alliance gather perspectives on the challenges and benefits of watershed protection programs in Texas and abroad. 6:30 p.m. (doors), 7-8:30 p.m. (event). Free. Texas State University, LBJ Teaching Theater at the LBJ Student Center, 109 Student Center Drive, San Marcos. 512-245-8775. [email protected] Feb 25 Second annual Sun Run Science Hall Elementary School’s student council hosts the event to raise money to help build a new track and field facility for the school. The race includes a 5K and Kids Dash. 8-11 a.m. $12 (Kids Dash), $15 (5K age 12 and younger), $25 (5K age 13 and older). Science Hall Elementary School, 1510 Bebee Road, Kyle. Feb. 25 Organic Gardening 101 Anyone can learn about cost-effective organic gardening at the library. The class will cover basic gardening tips. Attendees learn more about soil, fertilizer, pests and harvesting. The class includes an optional farm tour of Buda’s own Gray Gardens. Free. 1-3 p.m. Buda Public Library, 303 Main St., Buda. 512-295-5899. Feb. 25 Mardi Gras Parade & Celebration Catch a Mardi Gras Parade, enjoy live music and drink hand grenades at Zelicks. The parade will begin at noon and proceeds down Belvin Street and Hutchinson Street and ends at Hutchison and Blanco Street. Festivities continue at Zelicks. Free. 12-7 p.m. Zelicks, 336 W. Hopkins St., San Marcos. 512-757-8787 Feb. 26 Lock Push Grr 5K The race aims to raise funds for the Texas State Wind Symphony, which will be premiering a new piece of music in spring 2018. Funds raised help offset the cost of the commission project and support the composer, Ryan Chase. The race also includes a kids 1K race. 8-9 a.m. $35 (preregistration), $40 (race day). The Heights II, 1101 River Ridge Parkway, San Marcos. [email protected]