The Jonas Brothers joined Laura Bush in Dallas Sunday to celebrate a program that helps city youth connect to nature, the National Park Foundation said.

The first lady is the foundation's honorary chairwoman.

Joining 150 students from the Boys and Girls Club of Greater Dallas and Williams Preparatory School for a special event at the Trinity River Audubon Center, Bush and the popular fraternal boys band took part in hands-on activities aimed at helping young people from urban communities connect to the outdoors and develop a commitment to conservation.

The day's First Bloom activities included a hike in the Great Trinity Forest.

Vin Cipolla, the foundation's president and chief executive officer, said his organization was "thrilled" to have Bush and the Jonas Brothers on hand to help celebrate First Bloom's one-year anniversary.

"With the creation of our national parks, American citizens first displayed a deep commitment to conservation of our land and preservation of our history that has continued for more than a century," Cipolla said in a statement. "Through First Bloom the National Park Foundation is helping young people develop the sense of pride, ownership and responsibility that they will need to become the caretakers of this important legacy."