Yes
The white arum may be used as a marginal plant along streams, or on the edge of a pond. Plant in partial shade if there is no permanent water. It can be planted as a foliage plant in deep shade under trees but will not flower well in this position. It is fast growing and likes very rich, well-drained conditions. The name aethiopica is not directly related to Ethiopia. In classical times it meant south of the known world i.e. south of Egypt and Libya. Several southern African plants were given this specific epiphet early on. Although called the arum lily, it is neither an arum (the genus Arum) nor a lily (genus Lilium). The Arum Lily has tall, dark green, glossy arrow-shaped leaves and funnel-shaped white flowers.  Caution: irritant to skin and eyes, harmful if eaten. Grow Arum Lilies in sunny borders in rich fertile, moist or boggy soil. When growing in containers, use a loam based compost such as John Innes No. 2. Alternatively, plant Zantedeschia as a marginal plant at the edge of ponds. Apply a deep mulch around the crown of border grown plants in autumn to protect them from hard frosts. Lift and divide clumps of white Arum Lily every 3 years in autumn to maintain vigorous, healthy growth. Grow Arum Lilies in sunny borders in rich fertile, moist or boggy soil. When growing in containers, use a loam based compost such as John Innes No. 2. Alternatively, plant Zantedeschia as a marginal plant at the edge of ponds. Feed and water border and container grown plants regularly and ensure that the soil is kept moist. Apply a deep mulch around the crown of border grown plants in autumn to protect them from hard frosts. Lift and divide clumps of white Arum Lily every 3 years in autumn to maintain vigorous, healthy growth. Propagation: Divide in spring. Skill: Medium. Notes: Zantedeschia is a striking architectural plant with large glossy arrow-shaped leaves and large white hood-shaped flowers. A must have plant that looks great by the pond. It will survive the winter in most areas of the UK if the crown is at least 10 cm below the water surface. Even if the frost does cut it back it will usually regrow again in the spring. Feed and water border and container grown plants regularly and ensure that the soil is kept moist. Apply a deep mulch around the crown of border grown plants in autumn to protect them from hard frosts. Lift and divide clumps of white Arum Lily every 3 years in autumn to maintain vigorous, healthy growth. The striking arum lily flower is actually many tiny flowers arranged in a complex spiral pattern on the central column (spadix). The tiny flowers are arranged in male and female zones on the spadix. The top 7 cm are male flowers and the lower 1.8 cm are female. The name aethiopica is not directly related to Ethiopia. In classical times it meant south of the known world i.e. south of Egypt and Libya. Several southern African plants were given this specific epiphet early on. Although called the arum lily, it is neither an arum (the genus Arum) nor a lily (genus Lilium). Tropical marginal plants must continue to grow during the winter months. Growth will be reduced considerably as daylight hours diminish. Umbrella Palm, Dwarf Papyrus, Little Giant Papyrus and White Arum lilies will survive the winter indoors and make excellent houseplants. Other varieties are best treated as annuals. While tropical marginal plants do require more work than their hardy cousins, they can add a spectacular splash of colour to your water garden, making them well worth the effort. Many of the tropical varieties listed here may be kept indoors as houseplants during the winter, while others should be treated as annuals. iHlukwe. Identification. The Arum Lily (Zantedeschia aethiopica) ranges from 60 – 100 cm in height. Its arrow shaped leaves are plain green. It is a rhizomatous herbaceous perennial plant. The inflorescences are large, produced in spring, summer and autumn, with a pure white spathe up to 25 cm and a yellow spadix up to 9 cm long. It is absent from the dry far northern South Africa. Port Elizabeth Area. The Arum Lily may be found in Baakens Valley, Shark River (also known as Happy Valley) and at the dams and pans of water in the Greenbushes area. Conservation Status – LC (Least Concern) 1.
http://plantzafrica.com/plantwxyz/zantedeschaeth.htm http://harrogateaquatic.com/product.php?id_product=829 http://www.vanmeuwen.com/flowers/flower-plants/exotic-plants/zantedeschia-aethiopica-white/V18207VM?source=google-prodex http://www.vanmeuwen.com/flowers/flower-plants/cottage-garden-plants/arum-lily-large-plant/V59165VM http://www.pond-life.me.uk/plants/marginal/zantedeschia http://www.vanmeuwen.com/flowers/flower-plants/exotic-plants/zantedeschia-aethiopica-white/V18207VM?source=google-prodex http://plantzafrica.com/plantwxyz/zantedeschaeth.htm http://pondclinic.com/aquatic-plants/tropical-marginal-plants/ http://www.etiennedelport.co.za/2011/02/06/arum-lily/
are arum lilies marginal