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Jeffersonia dubia is a perennial plant that can grow up to 0.30 metres tall.
It is harvested from the wild for local use as a medicine..
E. Asia - N. China to Korea and Siberia.
]. Needle-leaved forests, mixed forests, thickets, shaded and wet places on slopes at elevations of 500 - 1100 metres in china[
Prefers a light sandy, peaty or humus-rich woodland soil and a rather shady situation[
]. Suitable for a choice position in a cool leafy soil[
This species is hardy to at least -20°c[
Plants have an extensive root system and resent disturbance[
]. They should be pot-grown and planted into their permanent positions as soon as possible They should be pot-grown and planted into their permanent positions as soon as possible
The root is febrifuge and stomachic[
]. It also contains the anti-tumour compound berberine[
Seed - best sown as soon as it is ripe in a cold frame[
]. Sow stored seed as soon as possible in late winter or the spring. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
Division in early spring[