Here is list of good places to see bluebonnets in Texas with pictures:
Muleshoe Bend Recreation Area near Lake Travis in Austin
Fredericksburg
Mason County
Washington County
Marble Falls
Texas Hill Country
Ennis
Llano
Brushy Creek Lake Park in Cedar Park, Williamson County near Austin
The Bluebonnet is the Texas state flower that blooms in March.
www.wildflower.org Lupinus texensis