The production, which began previews March 12 at Theatre at St. Clement's, had originally been scheduled to run through April 3. Because that initial four-week run is completely sold out, performances will now continue through April 10.

Directed by Dan Wackerman, the cast includes Jim Stanek as Johnny, Elizabeth Loyacano as Katie, Keaton Whittaker as Francie, Klea Blackhurst as Cissy, Timothy Shew as Oscar, Lianne Marie Dobbs as Hildy, Jason Simon as Aloysius and Thursday Farrar as Nellie with Matthew Bauman, Lauren Blackman, Jack Doyle, Christopher Kauffmann, Freddie Kimmel, Leah Landau, Kenny Morris, Johnny Stellard and Toni Elizabeth White. Opening is set for March 20.

The musical features a book by George Abbott and Betty Smith, music by Arthur Schwartz and lyrics by Dorothy Fields with a revised book by Elinor Renfield and further revisions by Susan DiLallo.

A Tree Grows in Brooklyn, according to press notes, is the poignant story of "the Nolan family, beginning in 1902 in Williamsburg, Brooklyn. There's Johnny Nolan, a ne'er do well singer with dreams of Broadway glory, his wife, Katie, struggling to make a better life for her family, and twelve year-old Francie, an aspiring writer who relies on her imagination and her love of reading to get through hard times."

The production also features scenic design by Joseph Spirito, lighting design by Kate Ashton and costume design by Amy Bradshaw.  Executive producer is Sarahbeth Grossman.

Theatre at St. Clements is located at 423 W. 46th Street, New York City. Tickets may be purchased by phone through Ovation Tix at (212) 352-3101 or online by visiting www.ThePeccadillo.com.