Easily grown in a damp light humus-rich woodland soil preferring a position in deep shade. One report says that it is best in a peat garden. Plants are hardy to at least -20°c. The plant only produces one large leaf each year. The seeds rupture the ovary before they are fully ripe and continue to expand naked, they are bright blue when fully ripe.

The roasted seed is a coffee substitute. The seeds are about the size of large peas, but are not produced in abundance.

Seed - best sown as soon as it is ripe in a shady part of a cold frame. If stored seed is used, it should be sown as soon as it is received. Germination can be erratic. Prick out the seedlings as soon as they are large enough to handle and grow them on in a shady part of a greenhouse or cold frame for at least their first winter. Plant them out into their permanent positions during autumn or early winter. Division in spring or just after flowering. Plants are slow to increase.

Rich moist soils in swamps, by streams and in woods.