Hardy Zantedeschia (Zantedeschia aethiopica) or Arum Lilies

• Arum lilies generally display pure white flowers and a lush foliage of glossy arrow-shaped leaves.
• Arum lilies can grow up to 3 ft. tall and wide (90 cm).
• Arum lilies are well-suited for bog gardens, rain gardens and plantings near ponds and streams. Zantedeschia aethiopica can even be grown in water up to 12 in. deep (30 cm).
• Arum lilies can survive in hardiness zones 7 or 8. They can easily tolerate freezing temperatures. Although the foliage of these plants will die back during the winter, they will survive and will emerge in the spring as if nothing had happened. However, applying an ample layer of mulch in the fall would help get these plants through winter.

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Tender Zantedeschias or Calla Lilies

• Calla lilies feature amazing flowers in almost all the colors of the rainbow and generally white-speckled leaves. They are mostly hybrid cultivars of Zantedeschia elliotiana (golden yellow), Zantedeschia rehmannii (pink), Zantedeschia albomaculata (white), Zantedeschia jucunda.
• Calla lilies range in color from pure white to a deep dark purple verging on black. In between are the colors typical of a sizzling summer: from golden yellow to all the colors in a dazzling sunset such as deep orange, burgundy red or even hot pink!
• Calla lily flowers attract so much attention that you could almost ignore their leaves. This would be a shame, however, since some of them feature unique speckled leaves. They look as if someone blithely spattered a paintbrush full of white paint over them.
• Calla lilies usually grow up to 12 in. tall (30 cm) and 30 in. wide (75 cm).
• Being tender, Calla lilies are often grown as houseplants. However, they are also well-suited for beds and borders or patio containers.
• Calla lilies make excellent cut flowers and have one of the longest vase life among cut flowers (up to 2 weeks). They are gorgeous in wedding bouquets and fresh floral arrangements.
• If you’d like to pick a flower to put in a vase, remember not to cut it with a knife. Instead, carefully pull the flower stem out of the plant.
• Calla lilies need well-drained soils and less water than Arum lilies.
• Calla Lilies are generally hardy in zones 8-10. In cooler climates (zones 3-7), the bulb-like rhizomes are usually treated as annuals. However, if you want to save your rhizomes for next spring, you may dig them up before the first frost and store them over winter before replanting them next spring. Not sure about your growing zone? Check here.

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