Calla Lily

The popular garden and horticultural specimen Calla Lily, also called the Arum Lily, is neither a lily nor a calla nor an arum. Nor is it a true flower; rather, what we know as “Calla Lillies” are spathes that surrounds an inflorescense of tiny flowers from plants in the genus Zantedeschia, which originated in southern Africa.

Many Calla Lillies have a long flowering season. The new blooms of the popular Zantedeschia aethiopica are faintly scented with a light, slightly sweet, buttery fragrance. The odour becomes less sweet as the flower ages. The dying spathe reveals the [fruit]] which is also of horticultural interest. Calla Lillies with shorter flowering seasons are also grown as ornamental plants due to their lush foliage; of particular note is Zantedeschia elliottiana, with deep green leaves with white spots.

Zantedeschia are hardly, insect-attracting plants with few natural pests. As a result, they are a delight for novice gardeners, but in warm climates they can become something of a pest. Zantedeschia have naturalised in some areas and are classed as weeds in parts of Western Australia. According to a New South Wales government fact sheet, the species can be invasive and "All Zantedeschia species are highly poisonous when eaten raw."

In popular culture

Actress Katherine Hepburn immortalized the Calla Lilly in a line from the feature film Stage Door, "The Calla Lillies are in bloom again." Their pure white colour has made them a popular choice for bridal bouquets.

Other sources

• http://www.abc.net.au/gardening/stories/s1866767.htm - profile from Gardening Australia website, sourced 26th November 2007.
• http://www.plantzafrica.com/plantwxyz/zantedeschaeth.htm - An article by Alice Aubrey of the Witwatersrand National Botanical Garden, with additions by Yvonne Reynolds, November 2001. Sourced 26th November 2007.