The Calla Lilies are plants belonging to the Zantedeschia genus in the Araceae family. The genus contains seven plant species and they are all commonly referred to as Calla Lillies. Some of them have other common names as well. Zantedeschia aethiopica is also known as giant white arum lily and common arum lily. Zantedeschia albomaculata is sometimes sold as spotted arum lily, and Zantedeschia rehmannii is known as the pink arum lily. Zantedeschia elliottiana has a yellow shade and is therefore called yellow or golden arum lily. The other three species, Zantedeschia odorata, Zantedeschia jucunda and Zantedeschia pentlandii, are usually called just Calla Lilies.

All the Calla Lilies originate from the African continent and are found wild between north Malawi and South Africa. They are often referred to as Arum Lilies. The Calla Lilies should not be confused with the flowers found in the genus named Calla that can be found in the Araceae family. This genus contains only one species, the Calla palustris, and unlike the Calla Lilies, this plant is native to cool regions in the temperate zoon and grows wild in Europe, North America and northern Asia. Another source of confusion regarding the Calla Lilies is that they actually do not belong to the family of the lilies.

The Calla Lilies are all rhizomatous plants that can reach a height of 1-2.5 meters. The leaves will grow up to 45 centimetres. The name Calla is derived from the Greek language and means