Canna tuerckheimii 1 plant  Canna tuerckheimii is an erect, herbaceous, perennial plant producing clumps of stems up to 5 metres tall with large leaves up to 70cm long and 36cm wide. The stems arise from a large, tuber-like rhizomeWith its large leaves sheathing a central stem, the plant has the appearance somewhat like a small banana plant.The plant is sometimes gathered from the wild for local medicinal use no pot