Arisaema tortuosum

One of the more common members of this genus tortuosum is a tall narrow grower, an old bulb will reach 1.5m. They love a semi shaded sheltered position in good humus rich soil. All Arisaema make good tub plants but they must be kept cool and dry over winter, packed in potting mix, vermiculite or even sawdust and kept in the shed is perfect. They’re repotted in spring when the new shoots emerge.
This Arisaema will self seed but the best way to make a big clump is to sow the seed in pots when its fresh. It will germinate like lawn seed.
I have bulbs 4 years from seed.