Arisaema costatum

A truly sinister and most impressive beast. The huge veiny trifoliolate leaf stands up to 60cm high, and as it unfolds, there emerges the big, hooded, white-striped, black-purple flower. From the spathe hangs a long thread that reaches the ground, allowing pollination by ground dwelling creepy-crawlies. Open, well drained, humusy soil in light shade, not too dry.