Zantedeschia Aethiopica

From architectural clumps of thick, bright green, arrow-shaped leaves arise serene white flowers (actually spathes). As well as being a superb garden plant this can be a wonderful architectural plant for pond margins. It is native to southern and east Africa in Lesotho, South Africa, Swaziland, Mozambique, Malawi, Zambia, Tanzania, Kenya and Madeira. The Royal Horticultural Society has awarded it the prestigious Award of Garden Merit. (AGM.)