Zantedeschia Pastel Mix. This perennial produces stunning flowers and boasts a long flowering period. Calla lilies are ideal border plants and look stunning in containers as well. Thriving in full sun to partial shade. Callas look especially beautiful planted near ponds as they thrive in boggy areas. Callas provide beautiful cut flowers. The flowering time is from July to September. Zantedeschias are also suitable for pots, flower boxes and terracotta pots. Plant them after the frost period is over (mid-May) in a sunny sheltered spot in the garden. Be sure to give them plenty of water. Planting depth about 10 cm, flowering time after about 3 months. Keep dry and well-aired until planting. These Zantedeschia’s are cultured tubers. Tip: Early flowering can be achieved by planting them indoors in February/March.