Definition: Esmac12 is a type of tree found in the Eastern United States. It's known for its distinctive pink flowers that bloom from early spring to late summer. Definition: Esmac12 refers to a tree species with pink flowers, typically characterized by being native to the eastern United States and having a distinctive red or white bark. It can be identified by its long, narrow leaves and small, oval-shaped flowers on the trunk, which are typically 3-5 inches long.