Okay, looks like Burnet, which is northwest of Austin, should be good. So riding plans are in the ballpark.
"Northwest of Austin, Burnet, known as the capital of the bluebonnets, has some of the best trails in the state and also holds an annual Bluebonnet Festival."
http://ww3.aaa.com/travelviews/2013/04/10/following-the-bluebonnet-trails-in-texas/