Smilax biflora trinervula (Miq.) Hatus. ex T.Koyama
Smilax china trinervula (Miq.) Makino
Smilax esquirolii H.Lév.
Smilax leucocarpa H.Lév. & Vaniot
Smilax sarumame Ohwi
Smilax trinervula is a deciduous perennial plant with stems that become more or less woody and persist. The branched stems are suberect to slightly climbing, unarmed or sparsely prickly, around 50 - 200cm long[
The plant is harvested from the wild for local use as a food.
E. Asia - southern China (Fujian, Guizhou, Hunan, Jiangxi, Zhejiang), Japan (Honshu).
Mountains, C. Japan[
]. Forests and thickets at elevations of 400 - 1700 metres in Fujian, Guizhou, Hunan, Jiangxi and Zhejiang provinces[
Smilax trinervula is native to the warm temperate and subtropical zones of Japan and southern China.
Succeeds in most soils in sun or semi-shade[
A dioecious species - both male and female forms must be grown if fruit and seed are required.
Young plants - cooked[
Fruit - raw[
]. The red berries are about 6mm in diameter[
Seed - sow early spring in a warm greenhouse[
]. This note probably refers to the tropical members of the genus, seeds of plants from cooler areas seem to require a period of cold stratification, some species taking 2 or more years to germinate[
]. We sow the seed of temperate species in a cold frame as soon as we receive it, and would sow the seed as soon as it is ripe if we could obtain it then[
]. When the seedlings eventually germinate, prick them out into individual pots when they are large enough to handle and grow them on in the greenhouse for at least their first year, though we normally grow them on in pots for 2 years. Plant them out into their permanent positions in early summer.
Division in early spring as new growth begins[
]. Larger divisions can be planted out direct into their permanent positions. We have found it best to pot up the smaller divisions and grow them on in a lightly shaded position in a cold frame, planting them out once they are well established in the summer.
Cuttings of half-ripe shoots, July in a frame[