Architectural and striking the arum lily will add an exotic touch to any garden it has large glossy arrow45shaped leaves which remain semi45evergreen in mild winters the unusual white funnel45shaped flowers 40spathes41 are held on sturdy stems and appear from may to july preferring lots of moisture zantedeschia aethiopica is best grown in reliably moist borders or around pond margins but can also be grown in containers height 90cm 40363441 spread 60cm 402