Another Houston Area Festival Tomball German Heritage Festival, Tomball, Texas Live music, dancing German food, beer, crafts, antiques, - March 28-30. http://tomballsistercity.org/festival.htm
Austin, Texas March 10 - April 30 Wildflower Days
http://wildflower.org/feature/?id=11 the Wildflower Center's 16 gardens will have bluebonnets and other favorites on display, as well as highway drives all around you.
Strange, but true!!! World's Largest Rattlesnake Roundup
Sweetwater, Texas. Snake hunters cover the area in West Texas finding rattlesnakes, bring them in alive, and you see snake handlers working with live snakes, snake meat being cooked and sold, and you will leave knowing more about the ole' Texas Rattler than you have ever know. March 7 - 9 Noland County Coliseum, Sweetwater, Texas.
rattlesnakeroundup.net
One of the Nation's greatest cites presents Remembering the Alamo, San Antonio, Texas, of course. March 8 - 9. An reactment of the Alamo siege - located at the Alamo Plaza. sanantoniolivinghistory.org
Azalea Trails, Nacogodoches, Texas. March 15 - 31. More than 20 miles of self-guided routes. nacogdochesazaleas.com
Fort Worth, Texas Butterflies in the Garden. All of March. Around 2,000 exotic butterflies are released each week into the conservatory of the Botanic Garden, for your enjoyment, photography, and viewing. fwbg.org
With the hundreds of events every month in Texas I suggest you try some of these links
to see about locations and dates for them.
http://texana.texascooking.com/cal/db/
http://www.texasfairs.com/
http://gotexas.about.com/od/texassizedattractions/a/TexasFestivals.htm
http://www.state.tx.us/category.jsp?language=eng&categoryId=12.2
http://www.state.tx.us/category.jsp?language=eng&categoryId=12.2
Happy Traveling.