Decorative trees are trees that are used to enhance the beauty of a landscape or garden. Two examples of decorative trees are the ACACIA and Pussywillow. The ACACIA is a genus of shrubs and trees belonging to the subfamily Mimosoideae of the family Fabaceae, native to Africa, Australia, and the tropical areas of Asia. The Pussywillow is a species of willow native to Europe and parts of Asia, and is known for its furry catkins which appear in early spring.