ARUM Perennial Plant Catalogue Back ARUM Greenish white spathes appear in May, often followed by clusters of red berries. Narrow spear shaped leaves appear in autumn and vanish by summer. Requires fertile soil. CAUTION TOXIC IF EATEN. SKIN AND EYE IRRITANT Arum ‘Chameleon’ Leaves are heavily marked grey-green. Height 50cm. Spread 30cm. Arum ita. ssp. ita. ‘Marmoratum’ AGM Leaves are attractively veined in silver. Height 50cm. Spread 30cm.