Another benefit of growing this plant is that it has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby. Thus this is a very good companion plant in woodland and other integrated plantings. Propagation is quite a simple matter. Make sure you do not let them dry out as the tubers will quickly wither unless kept moist.
Seed is also a simple matter.
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