A flower wreath is a decorative arrangement of flowers, leaves, and other materials that is often used to adorn the head or neck. The term 'flower wreath' can refer to two different types of decorations: leis and garlands. A LEI is a Hawaiian tradition in which a necklace made of flowers, leaves, shells, or other materials is worn around the neck. A GARLAND is a type of wreath made of flowers, leaves, and other materials that is hung from a wall or door.