Is pecan tree a proper noun?
No, the compound noun pecan tree is a word for any pecan tree anywhere.A proper noun is the name of a person, place, thing, or a title; for example:Pecan Tree Drive, Baton Rouge, LA or Pecan Tree Terrace, Colonial Heights, VAPecan Tree Inn, Queen Street, Beaufort, NCGreen Tree Pecan Company, Powell, TX"Lessons From a Pecan Tree" by Enid Sanford