The Calla Lily Calla Mixed, 'Zantedeschia', spring planted tuber, produces wonderful mixed colored flowers with lightly splotched foliage. The flower is trumpet like in form and has a waxy texture. Calla Lilies are also know as pig lilies. The Calla Lily has sword-shaped leaves which are formed at the end of celery-like stalks. The leaves are heart-shaped and are a rich, dark green color that may be speckled. The Calla Lilly makes an excellent cut flower and are great container plants.