Bluebonnet Trails: When in Ennis, it pays to follow the directions Express-News Copyright 2012 Express-News. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Updated 06:42 p.m., Saturday, March 31, 2012 The lush plants grow knee-high and the blooms are “plump and juicy,” says Sandy Anderson, who for 20 years has been chairman of the Bluebonnet Trails, a project of the Ennis Garden Club.