While you are planning what you are going to change for your summer garden this year, give some thought to including Arum Lilies
The familiar Arum Lily (Zantedeschia aethiopica), with its opulent and sophisticated pure white spathes which brighten up watercourses and wetlands throughout the region in spring and summer, belong to an indigenous genus which is restricted to the African continent. Seven species are recognised: Zantedeschia aethiopica, Z. albomaculata, Z. elliottiana, Z. jucunda, Z. odoratum, Z. pentlandii (Golden Arum) and Z. rehmannii (Pink Arum). The common arum is found from the Western Cape through the Eastern Cape, KwaZulu-Natal, Mpumalanga and into Limpopo Province. It is evergreen or deciduous depending on the habitat and rainfall regime. In the Western Cape it is dormant in summer and in the summer rainfall areas it is dormant in winter. It will remain evergreen in both areas if growing in marshy conditions which remain wet all year around.
The white arum forms large colonies in marshy areas ranging from the coast to an altitude of 2,250m. Thus one will find them contending with humid, salt laden air at the coast and freezing, misty mountain grasslands at high altitudes. They are very versatile in the garden as a result.
For a much more in-depth look at Arums visit http://gardeningisezee.com/?p=150