Bleeding hearts bloom in the native garden of Nancy Wenninger  in Walnut Creek, Calif., on Thursday, March 28, 2013.   Wenninger’s garden will be
Bleeding hearts bloom in the native garden of Nancy Wenninger in Walnut Creek, Calif., on Thursday, March 28, 2013. Wenninger's garden will be featured in The Bringing Back the Natives Garden Tour. (Susan Tripp Pollard/Staff)