Flower garlands, also known as leis, are a traditional Hawaiian decoration made of flowers and foliage. They are often given as gifts to show love and appreciation, and are worn around the neck or draped over the shoulders. Leis are typically made with fragrant flowers such as jasmine, tuberose, and gardenia, and can also include foliage like ferns and ti leaves. The flowers and foliage are strung together with string or raffia, and the garland is often decorated with shells, feathers, and other adornments.