are arum lilies marginal
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.pply 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.