Nelly Moser is a decoration in FarmVille. It was released on July 29th, 2010 and was available until August 12th, 2010 as part of the New England Event.
It was re-released on June 15th, 2011, as part of the FarmVille Birthday Classics event. It was available for 1 day as part of the New England theme, on the second day.
Note: as a decoration, this "tree" can not be harvested!