The National Big Tree Program is an initiative that aims to recognize and celebrate the largest trees in the United States. Managed by the National Arbor Day Foundation, the program encourages communities to identify and nominate exceptional trees based on their size, species, and historical significance. Through this program, individuals can learn about the importance of trees in the environment and the need for conservation. The program maintains a national registry of these remarkable trees, promoting awareness and appreciation for the natural beauty and ecological value they provide.