Zantedeschia Calla Lily
Calla lily are in the genus Zantedeschia, and the family araceae. There are twenty-eight species in the group which is native to Southern Africa. Zantedeschia calla lilies are hardy and some species in the group can survive temperatures as low as 23 degrees below zero. All parts of the plants in this genus are poisonous.
The flowers of calla lilies are in the shape of a funnel. They are available in many colors. Some of the colors include white, lavender, yellow, green, black, pink, and red.
The calla lily, Zantedeschia aethiopica, grow from rhizomes. They can adapt to many types of soil which make them good for naturalizing. They also make nice container plants or cut flowers. In some parts of the world they are considered weeds. This species is the most hardy of calla lilies and can grow in zones six through ten.
Calla lilies can be planted any time of the year providing that the temperature stays above fifty-five degrees for the first three months, and that there is no frost during that time. They like sunshine in the mornings, and shade during the hot evenings. For continuous growth, calla lilies should be planted in moist areas. For most species in the group and in most of the United States, the bulbs should be lifted for the winter.
Also See:
Calla Lily Flower Care
Guidelines for Cut Flower Growers
Guidelines for growing in pots
Guidelines for Growing Calla Lily Aethiopica