Requires a rich damp soil in a sheltered position. Dislikes drought[195]. A fairly hardy species, but it dislikes prolonged exposure to hard frosts. One report says that it tolerates temperatures down to about -10°c[200], down to -20°c in another report, though this report also says that this species does not like growing in areas with frequent low temperatures[195]. This species is notably resistant to honey fungus[200]. Plants only flower at intervals of many years. When they do come into flower most of the plants energies are directed into producing seed and consequently the plant is severely weakened. They sometimes die after flowering, but if left alone they will usually recover though they will look very poorly for a few years. If fed with artificial NPK fertilizers at this time the plants are more likely to die[122]. The new growth emerges in early spring. This is a good companion species to grow in a woodland because the plants are shallow rooted and do not compete with deep rooted trees[195]. Cultivated in China for its edible young shoots[183, 266]. The plant is heat tolerant in zones 10 through 7. (Plant Hardiness Zones show how well plants withstand cold winter temperatures. Plant Heat Zones show when plants would start suffering from the heat. The Plant Heat Zone map is based on the number of "heat days" experienced in a given area where the temperature climbs to over 86 degrees F (30°C). At this temperature, many plants begin to suffer physiological damage. Heat Zones range from 1 (no heat days) to 12 (210 or more heat days). For example Heat Zone. 11-1 indicates that the plant is heat tolerant in zones 11 through 1.) For polyculture design as well as the above-ground architecture (form - tree, shrub etc. and size shown above) information on the habit and root pattern is also useful and given here if available. An evergreen. The plant growth habit is a runner spreading indefinitely by rhizomes or stolons [1-2]. The root pattern is rhizomatous with underground stems sending roots and shoots along their length [1-2].