Zantedeschia Lavender This Calla Lily is lush and exotic looking, featuring stunning, lavender-blue, chalice-shaped flowers (spathes), which are surrounded by elegant, lustrous, dark green leaves. Callas make a showy display for weeks in the summer. They grow up to 20 in. tall and make a spectacular effect when planted in drifts through beds and borders as well as in containers too!  They perform best in full sun to partial shade in moist, well-drained soil. Happily, these lilies are deer and bunny resistant!