RHS A tuberous perennial with elongated heart-shaped dark to mid-green leaves. In summer,wavy-edged, purple-black hood-shaped flowers or spathes, with ared or mauve border and yellow edging, and a central yellow spadix, are produced on long, upright stems
Position
Soil Types
Max Height
0.5-1 metres
Max Spread
0.1-0.5 metres